You don't need fire rated fittings.
Use standard GU10 fittings. We use 7W megaman dimmerable lamps.
They seem ok with most dimmers, but it's a bit trial and error. The light is great from them.
You can build a switch out of grid parts or get a double dimmer and replace a dimmer module with a switch module.
Thanks.
1. We'll use the 7W megaman dimmerable lamps - just for my confirmation, is this the correct product?
http://www.ledstop.co.uk/led-lamps/led-spotlights/megaman-gu10-7w-led-lamp-50w-dimmable.html
2. If we go with them, do they come with / need a transformer (on the light fitting itself i.e. the part that will be above the plasterboard and in the attic)?
3. What double dimmer switch would you recommend (to ensure compatibility / that they work ok / that they actually look good when dimmed etc)?
4. In terms of getting a double dimmer switch (we'd get that, hopefully based on the recommendation in 3!) and then replacing one of the dimmer modules with a switch module for the extractor fan, what would be the normal quid pro quo - would we need to source the switch module to replace one of the dimmer modules on the double dimmer switch, or would this be something that the electrician would normally be able to provide?