New XJ - Cigar / Cigarette Lighters stopped working - wiri..

Hi,

I have a 2003 (new Aluminium) XJ8 and the cigarette lighters have
stopped working (front and rear), albeit Acccessory Sockets (front
glovebox and rear work okay). The fuse in the cabin fuse box is
definitely okay, I wondered what colour wiring is used from the front
cabin fusebox to the cigar lighters and whether there is an additional
(hidden)? in-line fuse?

Any ideas/help welcome!

Thanks,

Peter