I have driven past their premesis in Plymouth many times, it looks like they have given some of their floorspace to yacht parts but I'm sorry I cant comment on the company apart from the fact I have een them around for a few years. What were you considering in buying?
I have used this company on a few occasions and would recommend them.They give clear and precise estimates and the work is good. I shall be using them again.
I asked them to do some major work a couple of years ago. Unfortunately they were overloaded and subcontracted the work out to someone whose work I had significant issues with. The manager at SMS resolved all my complaints without question (even though I suspect they ended up at best breaking even on that job), was hugely apologetic and no longer uses that subcontractor. I've subsequently had work done by their lead engineer, Gary, who I would recommend without hesitation. In summary: my experience is that they respect customer service, have at least one excellent engineer, and I would use them again.
Six years ago they did a major engine service, engine mount, replaced the exhaust and a few other bits as part of the deal when I bought my boat in Plymouth. No complaints - all done on time.
+ me as well, I have used them and been quite happy with them. They did the first service on my VP 2003, while I watched, so have done them myself since! Advice re prop shaft seal (PSS) which was resolved with no work done, replaced engine mounts and water pump seal. IMO their bills are reasonable.