Fair comment.
Over the years I have purchased (multifunction) step ladders that fold down and will fit in the boot of a cab. You can reach first floor window sills with those.
These days I seldom spend less than a month or three at any customer's house. £30 to drop off your tools is an insignificant cost relative to the total bill.
I live in (very) west London. Most of my exterior work is via
Colin the pointer, he has the scaffolding up, I follow along once he acid washes the bricks and repoints them.
Admittedly.. from time to time he will have the scaffolding erected as per his needs, and then I notice that I can not open side hung casement sashes fully because the vertical poles are in the way. I end up needing to use a double 12 ladder to reach those parts after the scaffolding is removed but he always has a double 12 ladder on site.
I seldom work in central London, but if you had an older van, or car, you would be looking at £30+ just in charges (fees) to get to site and then £60+ for parking each day
I turn up. Do an 8 hour day and spend about a tenner to use public transport. It works for me... most of the time.