Hi treener. Absent other more knowledgeable replies, I do not have any direct knowledge of plumbing and related jobs, but I have had a couple of close British friends here for many years, both of whom are qualified British plumbers. They have both done very well, one running his own plumbing business, the other spending years in the building trade then his later years as a plumbing inspector for a major city. My sense is that if you are a qualified plumber (completed apprenticeship, etc), you would do well here. Good luck.