John Rumm wrote:

Roger Mills wrote:

My f-i-l's bungalow certainly used to be like that. Maybe the OP
has got what used to be called a "White Meter"?

My guess is the OP probably has something like this setup (although
perhaps without the prehistoric CU to the right!):

http://www.internode.co.uk/e7/

No, Two counters (low & Normal) on the meter and separate 24hr
mechanical timer with clock work spring which switch over the meter and
switch on the E7 cables

--
zaax