My credit card company has rather stringent fraud protection policies and they have no qualms about rejecting legitimate charges if they *think* the charge might be fraudulent (a policy that has become common practice among US banks, it seems).
I have already called to tell them that at some point over the next few weeks, a valid charge in the amount of 400 GBP will come through from the UK government and to please not reject it! Lol, but I'm hoping I can tell them exactly who the charge will come from...I still don't trust that they'll recognize the charge

Thanks in Advance!
Amy