HELP!, I can't get my dad's car Tax'd! My Dad has decided to go to HK for 6 weeks and left me to tax his vehicle. The car was orginally purchased over in Northern Ireland and he drove it over back to Blighty as he sold his business venture over there. He told me that new car's came with 4 years MOT over in Ireland, and the car was just over 3 years old, so I had to get an MOT done for him, which it passed. Now even with a valid MOT, insurance and the V5C doc, I'm unable to tax the car online or at my local post office, does anyone have any ideas what's wrong?