[JAS84]

I thought it was the theme tune for Wheel of Fortune didn’t realise it was even specific for the UK, and didn’t it start in the UK in the late 80s?

It did, started in 1988. The US version has actually had several different themes - Big Wheels from 1974 to 1983, Changing Keys from 1983 to 2000, Happy Wheels from 2000 to an unknown date (Wikipedia's missing that info), then an unnamed rock tune for a while, and then a new version of Changing Keys from 2021 onwards. Did the producers of the new show not realise that our version's classic theme was NOT Changing Keys?

This is weird. This clip of WOF is from 2000. It uses the 1998 US opening (even though it had already been replaced in the US by then) with the UK theme, but the studio and other graphics still feature the previous logo!
tvark.org