General information about accessing hormones (including hormone sources):
diyhrt.info
Transfeminine HRT specific information:
transfemscience.org
Local Needle Exchanges for free injection supplies:
https://www.oxfordshire.gov.uk/sites/default/files/file/public-health/ApprovedSWOPPharmacies.pdf
Places to get cheap injection supplies online:
https://ukmedi.co.uk
https://www.medisave.co.uk/collections/needles-syringes
https://www.exchangesupplies.org/