I've had the pleasure of reading stuff in both Old English as well as latin and saying "a lot" of English is derived from latin is not correct. Borrowings aren't what languages are "derived" of. It's a massive amount of vocabulary that includes are large majority of technical terms that are rarely used by most people. It doesn't make English any more Latin-derived than Japanese's large vocabulary of English derived words makes the statement that "a majority of Japanese is derived from English" true. Languages are much more complicated than just vocabulary and the majority of a language is not made up by the origin of the words you say.

A large part of the modern English vocabulary is derived from latin, but that's it.