In uk.d-i-y Mike Tomlinson wrote:

Following my question asking whether it was OK to post a small personal
ad, here it is:

for sale, portable isolating transformer, 500VA, 240V in via 13A plug,
110V out via one BS4343 (yellow) industrial socket. Matching BS4343
plug thrown in. RS part number 207-605.

Rated at 500VA continuous, 750VA intermittent. Useful for 110V power
tools, running 110V equipment (imported from USA), etc.

Probably ideal for the guy with the mixer.