I have suffered from a continuous drain of about 1 Amp from the battery,
resulting in a flat battery after a few days.  I find that disconnecting
Fuse 15 (courtesy lights, boot light, seat heater(not fitted))  reduces the
drain to 0.17 A  which is acceptable.  I can find no faults as the lights
and dimmer all work.

Has anyone experienced this and how do I correct it?

Many Thanks, amicalement, Jeff