seat belt seat

Hi guys, I know the rear seats are easy to remove and put back in, I was wondering if their is anyway to make the Type R Fn2 a 5 seater from a 4 seater. I understand that if you could change it you would have to get MOT approved, notify DVLA and insurance Would you be able to use Type S...

I cleaned my interior last week after moving house and finding bits of card/ cash/ coins/ crap down the seats and in doors...I have a little habit of cleaning the seat belts...so they dont wear down as my car is now 4 years old...so I plug them into the locking mechanism and clean them...