Thanks a lot ericma. Sounds to me like the best bet to guarantee a once only fix is to replace the lot - I can get into the loft space above so I'll try that option.
Have some lights in bedroom that are old and tatty - they are recessed ceiling spotlights. I would like to replace with new LED lights - not sure if I need a bit of a rewire in the room or can I just change each one individually?
I have a room with 4 of the old celiing lights (the round inset ones),
I would like to replace them with the led versions - had electrician in to do the kitchen but would like to do these myself. Can I get straight replacements for the existing ones?