Hi, many thanks for taking the time to reply, I've just read the mot manual emissions manual section, seem a grey area for cars built between 1992 and 1995.
I've managed to find a different mot garage who repair old fiats, I've explained the situation, as my 1999 not having a cat, he's assured me it will sail through the emissions test next week🙂 So hopefully panic over! I'll let you know how I get on.
Kind Regards Nick