Global Developmental Delay (GDD) is a term commonly used for children under five years old who are significantly delayed in two or more areas of development, such as movement, communication, learning, social skills or everyday living skills.
GDD describes a pattern of development rather than one single condition, disease or cause.
Some children make significant progress over time, while others may continue to need longer-term educational, developmental, communication, therapy or care support.
As children grow older, some may later be identified as having a learning disability, sometimes called an intellectual disability in clinical or international terminology. Other children may receive a genetic, neurological, developmental or other medical diagnosis that helps explain their developmental delay.
This page brings the main information together in one place for children, parents and carers across the UK.
Education support is different across the UK
England, Wales, Scotland and Northern Ireland do not operate one single special educational needs system.
England
Special Educational Needs and Disabilities (SEND), SEN Support and Education, Health and Care Plans (EHCPs).
Wales
Additional Learning Needs (ALN), Additional Learning Provision (ALP) and Individual Development Plans (IDPs).
Scotland
Additional Support for Learning (ASL), with Co-ordinated Support Plans for some children who meet the legal criteria.
Northern Ireland
Special Educational Needs, Education Authority support and Statements of Special Educational Needs where required.
1. What is Global Developmental Delay?
Global Developmental Delay means a young child is developing more slowly than expected in two or more developmental areas.
Gross Motor Skills
- Sitting
- Crawling
- Standing
- Walking
- Running
- Balance
Fine Motor Skills
- Holding objects
- Using toys
- Drawing
- Using cutlery
- Dressing
Speech & Communication
- Babbling
- Speech
- Language
- Understanding
- Expressing needs
Learning & Thinking
- Understanding cause and effect
- Learning new skills
- Memory
- Problem solving
- Following instructions
Social & Emotional
- Playing
- Interaction
- Relationships
- Emotional development
- Social communication
Everyday Living
- Eating
- Drinking
- Dressing
- Toileting
- Self-care
- Independence
Developmental milestones are guides, not a competition. However, where delays are significant across several developmental areas, further assessment and support may be appropriate.
2. Signs of Global Developmental Delay
Signs vary depending on the child's age, development and individual needs.
Babies & Toddlers
A child may:
- Be slower to sit, crawl or walk
- Have delayed speech or limited babbling
- Find feeding difficult
- Have poor coordination
- Show limited interest in some types of play
- Have difficulty interacting with others
- Need more help with physical development
Preschool Children
A child may:
- Struggle to follow instructions
- Have delayed language development
- Find learning new skills difficult
- Need help dressing or feeding
- Have difficulty playing alongside other children
- Find routines challenging
- Need more adult support than peers
Developmental differences can have many causes. Ongoing concerns should be discussed with an appropriate health professional.
If a child begins losing skills they previously had, such as speech, movement, interaction or other abilities, seek prompt medical advice.
Developmental regression may require urgent paediatric assessment.
In a medical emergency call 999.
3. What Causes GDD?
There are many possible causes.
Genetic Causes
- Genetic conditions
- Chromosomal differences
- Rare syndromes
- Inherited conditions
Neurological & Medical
- Brain-development differences
- Neurological conditions
- Metabolic conditions
- Some medical conditions
Pregnancy & Birth
- Premature birth
- Some pregnancy complications
- Birth complications
- Some neonatal illnesses
Sensory Factors
- Hearing difficulties
- Vision difficulties
- Other sensory impairments
Other Developmental Conditions
Some children may later be identified as having another developmental or neurological condition.
Unknown Cause
In some children no specific cause is identified, even after appropriate investigation.
Educational, developmental and therapy support should respond to the child's identified needs.
4. Assessment and Diagnosis
Assessment often involves several professionals working together.
Medical & Health
- Community paediatrician
- Health visitor
- GP
- Hospital specialists where required
Therapy
- Speech and Language Therapist
- Physiotherapist
- Occupational Therapist
Education
- Early years professionals
- Nursery staff
- SENCO / ALNCo or equivalent
- Educational Psychologist
Assessment may involve
- Developmental observations
- Parent interviews
- Play-based assessment
- Medical history
- Family history
- Developmental milestone review
- Hearing checks
- Vision checks
- Physical examination
- Genetic investigations where appropriate
- Other medical investigations where appropriate
Families often see the child across more situations and over a longer period than any individual professional.
Information about communication, feeding, sleep, movement, play, behaviour and everyday independence can all be useful.
5. Early Support
Early identification and intervention can help children develop communication, learning, movement, participation and independence.
Early Years Education
- Early years SEN or additional-needs support
- Individual support planning
- Specialist nursery support
- Play-based learning
- Communication programmes
Therapy
- Speech and Language Therapy
- Occupational Therapy
- Physiotherapy
- Specialist developmental services
Family Support
- Health visitor
- Family support services
- Portage where available
- Parent groups
- Disability organisations
A child should not automatically be left without educational or developmental support while waiting for a final diagnosis.
Portage
Portage is a home-visiting educational approach and service available in many local areas for young children with significant developmental or additional needs.
Availability and eligibility vary locally.
6. Education Support
Many children with GDD will have additional educational needs because developmental differences affect how they communicate, learn, participate or manage everyday tasks.
Learning Support
- Individual learning plans
- Small-group teaching
- Specialist teaching
- Repeated practice
- Breaking work into small steps
- Extra processing time
Communication
- Visual timetables
- Simple language
- Communication aids
- Symbols or pictures
- Augmentative and alternative communication
- Speech and language strategies
Personal & Physical Support
- Personal-care support
- Mobility assistance
- Specialist seating
- Accessible facilities
- Adapted equipment
- Safe moving and handling plans where needed
Sensory Support
- Reduced sensory overload
- Quiet areas
- Adapted environments
- Sensory regulation opportunities
Social Development
- Supported play
- Peer interaction
- Turn-taking
- Communication support
- Structured activities
Independence
- Dressing
- Eating
- Toileting
- Using equipment
- Making choices
- Communicating needs
In England, the SEND Code of Practice describes a graduated approach for SEN Support:
- Assess the child's needs.
- Plan appropriate support.
- Do or deliver the support.
- Review whether it is working.
Official Education Support by UK Nation
7. EHCPs & Statutory Support Plans Across the UK
The other UK nations use different systems and names.
England — EHCP
Some children with more complex or long-term needs may need an Education, Health and Care Plan where the statutory criteria are met.
An EHCP can coordinate support involving:
- Education
- Health
- Social care
Provision may include:
- Specialist teaching
- Therapy provision
- Specialist equipment
- Additional adult support
- Personal-care support
- Specialist educational placement
You do not have to wait for the school or nursery to make the request.
Wales — IDP
Wales uses the Additional Learning Needs system.
Where a child has ALN, an Individual Development Plan may record:
- The child's additional learning needs
- The Additional Learning Provision required
- Outcomes
- Responsibilities
- Review arrangements
Scotland — Additional Support
Scotland uses the Additional Support for Learning framework.
Education authorities must make adequate and efficient provision for children and young people with additional support needs.
Some children with complex and long-term needs may meet the statutory criteria for a Co-ordinated Support Plan.
Northern Ireland — SEN Statement
Northern Ireland uses Special Educational Needs Statements rather than EHCPs.
Following statutory assessment, the Education Authority may issue a Statement describing:
- The child's special educational needs
- The provision they should receive
- Relevant educational arrangements
8. Therapies and Specialist Support
Different children need different combinations of support.
Speech & Language Therapy
May support:
- Understanding language
- Expressing needs
- Speech development
- Communication
- Alternative communication systems
- Eating and swallowing where appropriate
Occupational Therapy
May support:
- Fine motor skills
- Daily living skills
- Dressing
- Self-care
- Independence
- Access to activities
Physiotherapy
May support:
- Mobility
- Balance
- Coordination
- Strength
- Posture
- Physical development
Educational Psychology
May help assess:
- Learning needs
- Developmental strengths
- Barriers to learning
- Support strategies
- Educational provision
Where a professional recommends support, families should understand:
- What should be provided
- Who will provide it
- How often
- What outcome is expected
- When progress will be reviewed
9. Supporting Learning at Home
Parents and carers can support development through everyday activities.
- Use simple language
- Play together regularly
- Read books daily
- Sing songs and rhymes
- Encourage communication
- Follow the child's interests
- Break tasks into small steps
- Use visual supports
- Praise effort
- Keep routines predictable
- Allow extra time
- Work closely with nursery or school
Dressing, meals, play, shopping, books, songs, walking, movement and helping with simple household activities can support communication and independence.
10. Transition to Nursery or School
Starting nursery or school may need additional planning.
Before Starting
- Transition visits
- Meet key staff
- Visit the classroom
- Share professional reports
- Discuss communication needs
- Discuss personal-care needs
Help the Child Prepare
- Photos of the setting
- Visual transition books
- Practice the journey
- Introduce routines gradually
- Use familiar objects where helpful
Plan Support
- Therapy input
- Communication plan
- Individual education support
- Environmental adjustments
- Named key adult
- Personal-care plan where required
Families should not have to begin from the beginning explaining every established need after the child has already entered the new setting.
11. Mental Health and Wellbeing
Some children with developmental delay may experience:
- Frustration
- Anxiety
- Low confidence
- Difficulty communicating emotions
- Distress around change
- Social frustration
- Emotional regulation difficulties
- Difficulty communicating pain
- Difficulty communicating fear
- Overwhelm in demanding environments
Where a child cannot easily explain what is wrong, changes in behaviour can sometimes indicate:
- Pain
- Fear
- Frustration
- Communication difficulty
- Sensory overload
- Fatigue
- Unmet need
Family Wellbeing Matters Too
Parents and carers may be coordinating health appointments, nursery or school meetings, therapies, benefits, care needs and uncertainty about the child's future.
Family and peer support can therefore be important.
12. Legal Rights
Legal rights depend partly on which country of the UK the child is educated in.
England
- Children and Families Act 2014
- Equality Act 2010
- SEND Code of Practice
- Education legislation
Wales
- Additional Learning Needs and Education Tribunal (Wales) Act 2018
- ALN Code
- Equality Act 2010
Scotland
- Education (Additional Support for Learning) (Scotland) Act 2004
- 2026 Supporting Children's Learning Code
- Equality Act 2010
Northern Ireland
- Education (NI) Order 1996
- SENDO 2005
- SEND Act (NI) 2016
- NI SEN Code of Practice
Rights may include
- Identification of educational needs
- Appropriate educational support
- Reasonable adjustments where legally required
- Participation in decisions
- Accessible communication
- Protection from discrimination
- Assessment for statutory support where criteria are met
- Specialist provision where necessary
- Complaint procedures
- Appeal or tribunal rights in some circumstances
- Independent advice and advocacy
In England, Wales and Scotland, the Equality Act 2010 protects disabled children from unlawful discrimination.
Schools and other education providers may also have duties to make reasonable adjustments.
13. Evidence Standards
Keeping good records can help secure appropriate support.
Health Evidence
- Developmental assessments
- Community paediatric reports
- Health visitor records
- Medical reports
- Hearing reports
- Vision reports
Therapy & Education
- Speech and Language Therapy reports
- Occupational Therapy reports
- Physiotherapy reports
- Nursery observations
- School reports
- SEN / ALN support plans
- Educational Psychologist reports
Family Evidence
- Parent diary
- Videos showing development where appropriate
- Emails
- Meeting notes
- Records of support tried
- Child's communication and preferences
Evidence should explain
Strengths
What can the child do?
Areas of Delay
Which developmental areas require support?
Impact
How does the difficulty affect learning, communication, participation or independence?
Provision
What has already been provided and what remains needed?
This can include:
- Emails
- Reports
- Meeting notes
- Support plans
- Referral letters
- Assessment decisions
- Complaint responses
14. Accountability & Complaints
If concerns remain unresolved, first identify whether the problem relates to education support, a statutory plan, healthcare, discrimination or another service.
This could include the nursery key worker, teacher, SENCO, ALNCo or equivalent.
Ask what has been decided, what action will be taken and when support will be reviewed.
Keep a copy of the complaint and all responses.
A statutory decision may have its own appeal or tribunal time limit.
Country-Specific Routes
15. Advocacy & Independent Support
Families may benefit from independent advice as well as health, nursery, school and local-authority support.
Mencap
Information and support relating to learning disability and developmental conditions.
Visit MencapEnquire — Scotland
Scotland's national advice service for additional support for learning.
Visit EnquireEducation Authority — Northern Ireland
SEN information, assessment and support.
Education Authority SEN16. Quick Help Directory
Child Development & Health
NHS Development Reviews NHS Learning Disability Diagnosis & Support NHS Mental HealthFinancial & Practical Family Support
A diagnosis of GDD does not automatically qualify a child for a particular benefit. Eligibility is normally based on the child's care, supervision, mobility or disability needs and the rules of the relevant benefit.
England & Wales
Disability Living Allowance for children may help with the extra costs of caring for a disabled child under 16 who meets the eligibility rules.
Scotland
Scotland uses Child Disability Payment instead of DLA for children.
Social Security Scotland states that a child does not need to have a diagnosis before an application can be made.
Northern Ireland
Disability Living Allowance for children is available through the Northern Ireland system for eligible children.
For disability-benefit applications, evidence can be strengthened by explaining how much additional help, supervision, prompting, communication support or mobility support the child needs compared with another child of the same age.
Key Message
Global Developmental Delay describes significant developmental delay in more than one area during a child's early years.
Early assessment, coordinated support and strong partnerships between families, health professionals, therapists and education settings can make a significant difference.
Children should receive support based on their individual developmental and educational needs rather than simply being left without support while waiting for a particular diagnosis.
Parents and carers should be involved in decisions and can ask questions, request assessment, provide evidence, seek additional educational support and challenge certain decisions where necessary.
Keeping clear records and knowing which education system applies in England, Wales, Scotland or Northern Ireland can help families make sure a child's communication, learning, physical, developmental and care needs are properly understood.
Right First Time UK — Information Notice
Right First Time UK provides general public information, awareness resources and signposting.
We are not an NHS service, diagnostic service, therapy provider, nursery, school, local authority, tribunal, law firm or regulated legal advice provider.
Global Developmental Delay and developmental needs differ significantly between children. Medical investigation, therapy and education support should be based on the individual child.
Education law and terminology differ between England, Wales, Scotland and Northern Ireland.
Always check current official guidance and seek appropriate health, education or specialist professional advice where required.