FYI Europarts (just down the road from me) seem to have S&T bulbs for around 50p or 60p each. I may pop in next time I'm passing and stock up on a few. Halfords were somewhat more expensive.

Job done. new bulbs from Europarts at 33p each and all is working fine (famous last words). I too lost my 10mm socket behind the trim Pegleg. That involved removing the plastic plate along the boot lip, removing the side pocket and pulling the trim out to retrieve it. At least that bit was pretty easy.

Those screws that hold the lamp cluster are mighty tight for the first 3 or 4 turns on the way out and on the way back in. Still, at least they are secure, I suppose.

All in all, a bit of a faff to change a stop and tail light.

Consider yourself lucky. Some cars are a nightmare to change headlamp bulbs. I know of one model where you have to remove the airbox!
Fortunately B Max headlamps are a doddle.

on the b-max you have to remove the airbox top to change the battery ;-)

Pretty simple though. The vehicle I was referring to requires the whole airbox out plus a few other bits.
It's my view that vehicles should be designed that exterior lighting can be replaced without the use of tools.

It's almost as if they design cars to be as difficult to fix as possible to try to get owners to pay the extortionate prices their main dealers charge for service. I can't see why it is necessary to use specialised or bespoke to vehicle tools to fix anything. And don't start me off on crumple zones where little more than a minor shunt leads to a right off.