Driving on UK insurance with a foreign driving licence...

[white_goodman]

My brother and his family are visiting from overseas for a month in August and due to the exorbitant cost of renting a car for a month, I had a spare vehicle available for him to use, so was going to add him to my insurance for a month so that he could use it whilst he was here. However, despite him passing his test here and having held a UK driving licence for 15+ years, his UK driving licence is no longer current, so my insurer will not allow me to add him to my insurance. He has come over and rented a car in the past with his foreign driving licence without issue. Has anyone else tried to do this? Is it typical? Are there any insurance companies that allow you to add a named driver to your insurance driving on a foreign driving licence? Any insight would be much appreciated.