British English vs backwards

British English is a noun but backwards is not a noun.

Word	Noun	Adjective	Verb	Adverb
British English	Yes	No	No	No
backwards	No	No	No	Yes

British English (noun)	backwards (noun)
English as spoken in the UK

British English (adverb)	backwards (adverb)
	in a manner or order or direction the reverse of normal
	at or to or toward the back or rear