I'm leaving up comments from people who found the Orange connection explains their charge and from those who don't remember buying anything from them in case it helps anyone else sort out a bill. OPCS is some sort of service company connected with Orange and your charges from them may be legitimate Orange charges or indicate fraud on your card (but not by OPCS, probably by someone who has used your card to buy a phone or a phone plan).
Comments are moderated to avoid spam. I understand that if you've found this page, you are probably frustrated, but I will also remove any comments that are offensive.
I've got an entry in my credit card statement I don't recognise and I'm wondering if it's some of the PC bits we were buying for the server: does anyone know who OPCS EQUIPMENT - EXCAL DARLINGTON is? Neither Google nor Bing recognise them!