Hi,
The meter was changed over shortly after 8am (the appointment letter said between 8am and 1pm AFAIR, so pretty prompt!) and took about 10 minutes.
A recycled mechanical meter (with a digital readout w00t!!!eleventyone!) of about 80s vintage rather than the 60s museum piece we had before.
Anyway, all done quote quickly and painlessly.
Rgds
Damon