In reply to Indy:
Yes, you can do this. Wire the two to the live and neutral on the UK plug.
Only issue is if they are not marked as to which way round they go (as Europlugs can be inserted either way). This could mean the outer bit of the bulb holder being live, which isn't what you would normally do, or the neutral being switched instead of the live if it has a switch.
This is unlikely to cause you harm unless you have a habit of sticking your fingers in bulb sockets. But to avoid confusion, if it is switched try to wire it so the live is on the side the switch acts on.
Post edited at 14:50