Just had a look and these green bulbs that are behind the heater controls are gone. Can anyone tell me what the bulbs are and where I can get some?

Here is the bulbs in question:





And here is where they are from:




Also can anyone confirm if the hazard switch lights up or flashes when active because mine does not?

 

Not sure bt43 from maplins

 

I want to upgrade mine to white and want to know if the GC8 will be the same bulbs?

 

Probably a wire ended bulb, you undo the wire at the bottom and the whole bulb will pull out of the tubular plastic holder.
Try Maplins first, take one in if you have a Maplins, the guys in there are GOOD, they will find it if they have one.
If not, t'internet or dealers.