So today I confirmed that we have overcome one of the issues with my new car. When I put my seat right back (as we had to do on the old car) the bleeding "hand-rest" was in the way meaning I couldn't put the seatbelt on with my right hand, it necessitated a lean over and stick it in manoeuvre. But we moved the seat forward by 2 clicks and I can now
reach the belt with my right hand