[richev]

Personal anecdote: about four years ago, living in London, I needed a plumber to do a small job just before Christmas (replacing a leaking shower tray).

Of the three who came out to quote, we went with the Polish one because he was the most professional in his manner, gave us a written quote on paperwork with a company VAT (tax) number, and gave us confidence that he would do a quality job using quality parts.

This he did, for the amount he quoted.

As for cost? His quote was the most expensive.