Thanks NT and again Christian - will try Ikea for bulbs. We'd sourced a
few on tinterweb, but would rather buy locally (even if it is Ikea).
Was aware of the largely fictional nature of equivalent wattage
estimates, but I don't think this will be a problem - in fact, the 50w
halogens they came with would probably have been overkill - these are
small, loft bedrooms with coombed ceiling/wall.

Cheers - Adam...