Another question about potential re-wire.
The existing wiring :
Installed circa 1975
Power cables PVC 2.5mm twin and earth (solid not stranded conductors)
Lighting cables are PVC double insulated singles with earth (again
solid not stranded conductors)

I realise that these do not comply in terms of the new colour coding
but in all other respects they seem perfectly OK. I'm planning to
split the ring main into two (upstairs and downstairs) and add some
additional sockets. Also make a similiar split in the lighting and I
was hoping that I wouldn't have to replace all the existing wiring.

Does this sound feasable and would I get my relevant approvals...??

Andy