British Sign Language (BSL) and Fingerspelling Resources
It is important to remember that many BSL signs have regional variations. Learning online may not give you the signs that are used in your local area. It is always best to learn from a local, deaf sign language tutor. You will also learn much more about deaf awareness and deaf culture in this way.
https://www.ndcs.org.uk/documents-and-resources/fingerspelling-poster/
https://www.ndcs.org.uk/documents-and-resources/fingerspelling-postcard/
Online BSL dictionary. An app is also available. https://www.signbsl.com/sign/sign
Online introductory course https://www.british-sign.co.uk/
Find a BSL training course https://www.signature.org.uk/