Update: Following a chat with the CID friend of mine, he pointed me at the Fraud dept and the local rural office.
I had a lovely e-mail from them who told me … “In July this year the government announced changes to how Fraud was dealt with by setting up Action Fraud which is a national Fraud reporting agency. The contact number for them is 0300 1232040 they take the details from you and give you a reference number which you in turn give to Tesco. Tesco Bank have their own internal Fraud Investigators who liaise with the Police in which ever area of the country the evidence indicates that the offence took place. Tesco Bank is the aggrieved party in this matter as they are the party who have been deceived.
However it may be prudent for you to do a credit check on yourself to see if anything untoward appears that you have no knowledge of. I hope I have explained things clearly if you have any other concerns please re-contact us and I will endeavour to assist you further.”
Ah. Okay. That’s alright then. Thanks.
I’ve replied along the lines of “but they know where we live!”