Markmon wrote:

Is this a good idea anyway or is the estate agent just covering his
back?

Can't tell without seeing the place! If it's been built in the last,
say, 20 years, and noe indication of bodging, it looks like CYA; if it's
interwar, with fittings of a mixture of ages, the arse that's convered
might just be yours ;-)

Also how much should we expect to pay for this? I have been told about
£200 but this seems a bit high.

Certainly high for these parts - here in Bristol you're looking at more
like 80 quid for a competent local electrician to spend the 1hr+ doing
the inspection and writing out the NICEIC-or-similar Ree Port...

Stefek