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Thrombosis referrals


Coronavirus: thrombosis update

In response to the coronavirus (COVID-19) outbreak, please read our advice and information.


To refer a patient

All NHS GP referrals must be submitted using the NHS e-Referral service (formerly Choose and Book).

Referrals sent by email or post from GPs will not be processed.


  • National e-Referral service appointment line: 0345 608 8888
  • NHS e-Referral service office at Guy's and St Thomas': 020 7188 0823/6

Anticoagulation referrals

For NHS GP referrals, please use the NHS e-Referral service.

For secondary care referrals, please download the anticoagulation clinic referral form (PDF 82Kb) and email to

Genetic counselling referrals

See the separate genetic counselling referrals page.