• The North West Thames Regional Genetics Service (Kennedy-Galton Centre) offers genetic counselling and genetic diagnosis to individuals and families living in the area.

  • Telephone number: 0208 869 2795
  • Location: North West Thames Regional Genetics Service, Kennedy Galton Centre, Level 8V, St Mark's Hospital
  • Division: Integrated clinical services

About the service

The North West Thames Regional Genetics Service (Kennedy-Galton Centre) offers genetic counselling and genetic diagnosis to individuals and families living in the area.

We are likely to be your regional genetics centre if your GP surgery is located in:

  • Bedfordshire
  • Brent
  • Chelsea
  • Ealing
  • Edgware
  • Hammersmith
  • Harrow
  • Hertfordshire
  • Hillingdon
  • Hounslow
  • Kensington
  • Westminster.

We are based at Northwick Park and St Mark's Hospitals, but we also offer outreach clinics in different hospitals across the region.

If you are concerned about your health, the health of a family member, or your family history, you should first speak to your family doctor or GP. They may be able to answer your question, or they may refer you on to our service or another service that can help. 

If you are referred to our service, you will receive an appointment at one of our clinics.

Read more about our clinics.


To make a referral, please:

  • write to us at North West Thames Regional Genetics Service, Level 8V, Northwick Park and St Mark’s Hospitals, Watford Road, Harrow HA1 3UJ
  • email our team
  • call us on 0208 869 2795.

Urgent referrals should be emailed to us and clearly marked as urgent.

Your referral must include your patient's:

  • full name
  • address
  • date of birth
  • NHS number
  • GP details
  • reason for being referred to the genetics clinic.

Please include as much information as possible about the specific condition or suspected condition in the family. Sometimes another family member of your patient might have a confirmed genetic diagnosis. If this is the case, please include the following wherever possible:

  • a specific diagnosis 
  • relevant test reports
  • the exact biological relationship between the affected individual and the person being referred eg half-sister (same mother).

Referrals for women who are pregnant

If you are referring a woman who is pregnant, please:

Referrals for Tay Sachs Carrier screening

Read more about Jnetics Ashkenazi Jewish screening and to refer a patient for Tay Sachs carrier screening  to North West Thames Regional Genetics Service.

Useful information for professionals

Genetics: cancer referrals

To make a referral relating to cancer, please:

  • write to us at North West Thames Regional Genetics Service, Level 8V, Northwick Park and St Mark’s Hospitals, Watford Road, Harrow, HA1 3UJ
  • email us
  • fax your referral on 0208 869 3106

For advice on a referral relating to cancer, please contact us:

BRCA1 and BRCA2 expedited testing

We offer expedited testing of BRCA1 and BRCA2 is available for patients who meet the testing criteria. Please email or fax us your referral using the BRCA urgent referral form to avoid delay.

Process for referrals

If your patient meets our cancer referral criteria, we will send them a family history questionnaire. Once we have reviewed the questionnaire, we will offer them an appointment or send them a letter containing appropriate screening advice.

Please let your patient know that it's important for us to confirm the family history, where possible, in order to determine eligibility. Unfortunately, this can cause delay especially if we don't have enough information at the beginning of the process.

If your patient has an identified genetic cancer susceptibility gene, we will accept a referral. We will need a copy of the genetic test report from the family member who has been tested.

If your patient's family does not have an identified genetic cancer susceptibility gene, then we usually only offer an appointment to someone who is affected. In some cases, where there is no affected relative available for testing, we would consider assessing an unaffected individual. The affected relatives must be blood relations, but can be through the maternal or the paternal side.

Referral criteria and questionnaire

Family history questionnaire (for patients to complete)

Genetics cancer referral criteria

BRCA urgent referral form

Please include any histology reports, such as receptor status or mismatch repair immunohistochemistry reports.

Our laboratories

Our laboratory services are provided by North East Thames Regional Genetics Services, based at Great Ormond Street Hospital. You can contact them:

  • by phone: 
    • 020 7829 8870 
    • 020 7762 6888
  • by email.

Screening options for Jewish genetic conditions

If you have one or more grandparents of Ashkenazi Jewish descent, you have two screening options:

Tay-Sachs carrier testing only

If you live in north west London, your GP can refer you to our genetics service for Tay-Sachs disease carrier screening for free.

Download our Tay-Sachs screening referral form

Screening for other conditions

If you'd like to be tested for 9 common genetic conditions (including Tay-Sachs disease), you can book a screening session at Barnet Hospital for £190 without a referral from your GP. This service is part-subsidised by the charity Jnetics.

Book an appointment at

Useful resources

Information about genetics

  • Genetic Alliance UK: the national charity of over 130 patient organisations, supporting all those affected by genetic conditions. The website contains an introduction to genetics and genetic conditions and has many patient information leaflets.
  • Unique Rare Chomosome Disorder Support Group provides information and support to families and individuals affected by any rare chromosome disorder.
  • Contact a Family provides support, advice and information for families with disabled children, no matter what their condition or disability.
  • Antenatal Results and Choices (ARC) is a national charity which provides non-directive support and information to parents throughout the antenatal testing process.

Information if you're coming to our service because you have a family history of cancer

  • Macmillan provide practical, medical and financial support and push for better cancer care. 
  • Breast Cancer Care offers support and information to people affected by breast cancer. Specific information is available for people with a family history of breast cancer.
  • Beating Bowel Cancer raises awareness and provides support and information to anybody worried about or affected by bowel cancer.

Other services we provide

Where we provide your care

We hold clinics at several different hospitals across the region and will usually arrange to see people in the clinic closest to their home. Your appointment letter will state where the clinic will be held. 

If you live outside of the North West Thames area, you can find your local genetics service here.

Clinic locations

Barnet General Hospital

  • Address: Wellhouse Lane, Barnet, Herts, EN5 3DJ
  • Telephone: 020 8216 4600 or 0845 111 4000
  • Genetics clinics:
    • Main outpatients (clinic 1, 2 or 3) on level one of the main building.
    • Children’s outpatients on level two of the main building

Bedford (Child Development Centre)

  • Address: Child Development Centre (CDC), Hill Rise, Kempton, MK42 7EB
  • Telephone: 01234 310278

Bedford Hospital

  • Address: Bedford Hospital, Kempston Road, Bedford, MK42 9DJ
  • Telephone: 01234 355122
  • Genetic clinics:
    • Paediatric outpatient department at the South Wing, Bedford Hospital.
    • Outpatient department, Breast Clinic

Charing Cross Hospital

  • Address: Fulham Palace Road, London, W6 8RF
  • Telephone: 020 3311 1234
  • Genetics clinics: main outpatients department, first floor, clinic block

Chelsea and Westminster Hospital

  • Address: 369 Fulham Road, London, SW10 9NH
  • Telephone: 020 8746 8000
  • Genetics clinics: paediatric outpatient department, ground floor

Ealing Hospital

  • Address: Ealing Hospital, Uxbridge Road, Southall Middlesex, UB1 3HW
  • Telephone: 0208 967 5000
  • Genetics clinics:
    • The main outpatients department
    • The antenatal department in the maternity wing

Hammersmith Hospital and Queen Charlotte's & Chelsea Hospital

  • Address: Du Cane Road, London, W12 0HS
  • Telephone:
    • Queen Charlotte’s Hospital: 020 3313 1111
    • Hammersmith Hospital : 020 3313 1000
  • Genetics clinics are held in the following locations:
    • The Centre for Fetal Care, second floor, Queen Charlotte’s Hospital
    • Paediatric outpatients, ground floor, D Block, Northside, Hammersmith Hospital
    • Cancer clinic, gynaecology outpatients, ground floor, Queen Charlotte’s Hospital
    • Main outpatient clinic in Hammersmith Hospital

Heart of Hounslow Polyclinic

  • Address: Heart of Hounslow, 92 Bath Road, Hounslow, Middlesex, TW3 3LN
  • Telephone: 020 8630 1425
  • Genetics clinics: Children’s Services, ground floor

Hemel Hempstead Hospital

  • Address: Hillfield Road, Hemel Hempstead, Herts, HP2 4AD
  • Telephone: 01442 213 141
  • Genetics clinics: antenatal clinic, maternity unit, level 2, Verulam wing

Hertford County Hospital

  • Address: Hertford County Hospital, North Road, Hertford, Herts, SG14 1LP
  • Telephone: 01707 328111
  • Genetics clinics: clinic A.  

Hillingdon Hospital

  • Address: Hillingdon Hospital, Pield Health Road, Uxbridge, UB8 3NN
  • Telephone: 01895 238282
  • Genetics clinics:
    • Paediatric Outpatient department, lower ground floor (Peter Pan and Wendy Wards)
    • Cumberlege Centre, third floor, main tower block

Lister Hospital

  • Address: Coreys Mill Lane, Stevenage, Hertfordshire, SG1 4AB
  • Telephone: 01438 314333
  • Genetic clinics:
    • Main outpatients, clinic F
    • Forster Suite, Level 10, Tower block

Luton and Dunstable Hospital

  • Address: Luton and Dunstable University Hospital, Lewsey Road, Luton LU4 0DZ
  • Telephone: 01582 49 11 66 
  • Genetics clinics: main outpatients and children’s outpatients, main hospital building.

Northwick Park Hospital (Kennedy Galton Centre)

  • Address: Northwick Park Hospital and St Mark’s Hospital, Watford Road, Harrow. HA1 3UJ
  • Telephone: 020 8864 3232
  • Genetics clinics are held in the following locations:
    • Kennedy Galton Centre, level 8, St Mark’s Hospital
    • Northwick Park: main outpatients
    • Chaucer Unit, level three, paediatric department

St Albans City Hospital

  • Address: Waverley Road, St Albans, Herts, AL3 5PN
  • Telephone: 01727 866 122
  • Genetics clinics: Breast Care Unit, ground floor, main building

St Mary’s Hospital

  • Address: Praed Street, London W2 1NY
  • Telephone: 020 3312 6666
  • Genetics clinics: paediatric outpatients, 6th floor, Queen Elizabeth the Queen Mother Building

Watford General Hospital

  • Address: Vicarage Road, Watford, Herts, WD18 0HB
  • Telephone: 01923 244 366 
  • Genetics clinics:
    • Fracture clinic
    • Children’s outpatients

West Middlesex Hospital

  • Address: Twickenham Road, Isleworth, Middlesex TW7 6AF
  • Telephone: 020 8560 2121  
  • Genetics clinics:
    • children’s outpatients, third floor, East Wing, main building
    • Joint colorectal cancer genetics clinics, outpatients department 4, ground floor, East Wing, main building

100,000 Genomes Project

Our service is taking part in the 100,000 Genomes Project - a national project which has been set up to help clinicians across the country to better understand and treat rare diseases and common cancers.

By studying thousands of genomes, our scientists and healthcare workers can improve their knowledge of diseases and work towards finding more effective treatments. They can start to predict how well a person will respond to a treatment (known as personalised medicine).

Did you know...

  • over 330,000 new cancers are diagnosed every year
  • at least 80% of rare diseases are genetic.

If you know have a rare disease or cancer and want to become a part of the 100,000 Genomes Project, please speak to your GP, who can refer you to our Clinical Genetics Department.

For more information:

Help us improve our website. How useful was this page?

Help us improve our website. How useful was this page?