In article ,
Basil Jet wrote:
So if someone uses a taxi in England and offers nothing but Scottish
money, are they committing an offence,

No. Provided that there is no intention to make off without paying
(and offering actual folding cash which is rebuffed by the driver
is a pretty good defence!) then there is no crime.

and if so, what is the legal term
to describe the things that can be used to settle the debt to the taxi
driver, namely English notes and British coins?

Anything mutually agreeable can be used to settle the debt at the
roadside.

--
Mike Bristow