The best biscuit recipe book?

[satans worm]

Been watching the GBBO , combined with living in the states so unable to just buy what like, I thought it would be cool to try my hand at baking some

So looking for a book dedicated to english biscuits, I don’t want ‘contestant versions’, just the original style ones the GBBO dose in the technical, but with full instructions!

It would be great if it was dedicated to biscuits only, and if people know the same sort of book for traditional cakes I’d be all ears too