UCLH provides an integrated specialist service for the diagnosis, treatment and follow-up of patients with TTP, aHUS and other TMAs. UCLH is a designated NHS England specialist TTP centre.

These conditions are rare disorders, but we have a dedicated team of medical professionals who have developed patient pathways to maximise response to therapies. We are committed to investing in research to understand these disorders and improve treatments.

General enquiries

Service management

Other contact information

For all general and appointment enquiries regarding TTP please contact the TTP PA on 020 3447 9884 or email uclh.ttpadminteam@nhs.net

If you are a patient with a clinical enquiry please call one of the two CNS mobile numbers listed above. Please note the CNS line will only be open Monday to Friday 9am - 5pm.

For any urgent patient enquiries outside of the hours 9am - 5pm, please call the out of hours phone on 07852 220 900.


Haemostasis Research Unit (HRU)
University College London
1st floor, 51 Chenies Mews
London, WC1E 6HX


Other referral information

Acute referrals

For TTP/TMA referrals during normal working hours please contact the UCLH TTP/Transfusion SPR (bleep 7050) via UCLH switchboard (02034567890). Outside of normal working hours please contact the on-call haematology SPR (ask the UCLH switchboard operator for the haematology registrar covering TTP/clotting). The on-call TTP/clotting consultant can also be reached by contacting UCLH switchboard.

Referral address

Department of Haematology,  UCLH
5th Floor East, 250 Euston Road
London, NW1 2PG