In case you don't get a Lymington one, I can recommend Marine Power, Bursledon (next to Aladdin's Cave) as the closest I know. Yanmar and Volvo agents, I believe, he has resurrected injectors and a rusty head for me.
I have now found someone nearer the boat in Hayling Island so I haven't been there in a couple of years.
I would normally recommend Dave Crawford, who I have always found to be good and reasonable. However, an acquaintance has recently had a bad experience post engine service so maybe his staff's standards are slipping. Best you speak to Dave in person and make up your own mind.
Bob,
I do the usual each yr but after 6 yrs feel I should get professional overhaul. V noisy engine and a lot of black smoke when starting. Volvo 2002. Any recommendations?
Slow