I picked this up last time I was back in the UK.

It’s from a range of EDC goodies by True Utility, widely available in the UK.
They are packaged in a handy waterproof container big enough to keep my phone in.

it opens out to give this…

Bits insert into the end for use as a screwdriver, they’re an odd size though, so you can only use the supplied ones.

Very handy little tool.