Jim K brought next idea :
He wont be around for long.

--

I suspect he will, he has been around for many years already. He seems
to work a system of ladder up, looking, pricing and doing the jobs in
one session of around an hour, all within a mile or two of his home. So
maybe £420 per seven hour day, £2100 per week for the smaller jobs.

The previous guy I tried to get a price from for flaunching the top of
the chimney, was reluctant to even quote, was talking of several
hundred pounds to demolish, rebuild and reflash.