Thanks everyone for your advice, think I have misunderstood the electrician and don't know quite as much as I thought I did - not the best position to be in where electrics are concerned!!! Off now to find another electrician! :?
mmmm - the 4 sockets are one big spur, am I completely off course?!
My light switch has nowhere to put a fuse, so presumably I need a different switch?!
I have just built an extension, I have added 4 sockets to it which I have connected to the ring main. An electrician told me I could connect the new lights to the ring main too by running a 2.5 amp cable from the last socket to the light switch, then run a 1.5 amp cable from the light fitting...