just love you course cowboys naz! short course in plumbing, get all high and mighty, expecting £100,00 a year. you will only earn good money like that if you have 10 hard working experienced lads in 10 vans and enough work for all. that said a hairdresser with 10 busy salons will earn similar to a plumber.
becoming gas safe does not mean you can fix a boiler!
good luck to coventry
Hope you have missed out a 0 in your calculation Doc no way would I clear anyones shoite for £10,000 a year