Almost every job on a boat eventually needs someone with a trade behind it. A survey before you exchange contracts, an engineer to trace a fuel problem, a rigger to replace standing rigging at ten years, a yard with the crane capacity to lift a 14-tonne motor cruiser, an insurer who understands agreed-value hull cover. The UK marine trade is largely made up of small owner-run firms working out of a handful of harbours, and the good ones rarely advertise: they are busy because the boatyard next door recommends them.
That is what this directory is for. Every company is filed by trade, region and capability, so you can shortlist by what actually matters: whether they travel to your berth, whether they hold the accreditation the job needs, whether they work on your type of hull, and whether the season leaves them any spare time. Use the service-type pages below when you know what the job is, and the regional pages when the boat cannot easily be moved. Contact two or three, describe the work in the same words to each, and compare the questions they ask you back. The firm that interrogates the job before quoting is usually the one worth hiring.