DaveM,
The 0870 777 9555 number is indeed Jessops and provides you with the following options to choose from:-
1. If you making an insurance claim, or a Jessops Store
2. If you are a insurance company, work for Jessops, or a repair service
0. If it isn't a department you are after
I pressed option 0 and got through to switchboard (geo alternative 0116 232 6000). I did a google search of their website for anything with 0870 in it and nothing came up. It could be they are planning to move to 0870 or that number is only released when you take insurance out or have a problem with their products. The
Contact Us area of their website generally use online forms instead of phone numbers except for switchboard only queries.