Community phlebotomy services links for patients to book their own appointments:
https://10to8.com/book/nelftbookabloodtest/
Redbridge:
https://www.redbridgeccg.nhs.uk/Local-services/blood-tests.htm
Barking and Dagenham:
https://www.barkingdagenhamccg.nhs.uk/Local-services/blood-tests.htm
Havering:
https://www.haveringccg.nhs.uk/Local-services/blood-tests.htm