Not had first hand experiance but I am told by those who have delt with them that they are very good. If you fancy a trip you could go to Jack Smiths Trimmers in Swansea. Very keen price and excellent service. Don’t know how to post their web site so just Google them and see the details.
I have just had a new green mohair roof fitted to my Mk 2 by GJ Sports cars of Launceston. Graham who runs it specialises in MX5’s The price was good and result is spot on. He runs the business from the old school house in Lewannick which is of course not a million miles away from Plymouth. In fact it is 25 miles on the A388. He kept my car for a day but lent (no cost) me his loan Mk1 whilst he had mine. Definitely worth considering.