That seems to be the old numbers, according to the Security Guard on 01793 512100, although on 01793 548100 says it's
Customer services
. I'll need to check that one further - it may be a divert.
The other number for them is in our database -
0207 7606900
which is the switchboard of BCA, who will transfer you 'oop North' if you ask for BOL.
When I talked to them yesterday, I was told they've closed down the other office and are now managing it from Yorkshire.