I've got them. Got them from Nissan this morning. The young guy that originally quoted me, quoted me £5 each, there are three of them. When I picked them up this morning, I was served by an older chap and they were only £6.88 for the three of them. I just wondered if it was possible to get them elsewhere, for a lot less.
The bulb does come out of the plastic holder, I'll try to post another pic later. Maybe an electronics shop would have them.