So I decided to replace the boot light with one of these:
http://www.ebay.co.uk/itm/230879251093
They are the same as the footwell lights.
They come with adapters so they just plug straight in to the original socket and can be attached on the outside to the see through cover.
I then decided I wanted one either side, so I spliced into the original wired behind the light then ran a cable under the sil to the other side. I then attached the 2nd led board to a a sheet of plastic, drilled