i want to know what is wrong with earning £200 a day being a plumber? this gives you £1k a week. Knock off hols and corgi and you earn £40k approx. Add back on copper profits and profit from supplies and you can easily come up to £48k.
why is it then a plumber will charge £400 a day to swap over a combi ? or a grand as outlined above. i just dont believe any plumber who pleads poverty. the reality is you guys make £60-100k, after costs, a yr depending on what you can actually charge people.
Your argument assumes that the work is there on tap 52 weeks of the year, without competition. Also it costs the sums you've mentioned for a firm to employ an engineer c/w all equipment, vehicle, tax contributions etc.... Out of that the employee may take home less than £450pw. So how is it that the person you describe even in the unlikely event they have business every day of every year manages to put the £48k in his pocket?