There are guys who charge £4 but do 8 houses per hour.
7 mins 60 seconds per house, one person; Mrs Jones takes 1 minute to get to the door, then a further 2 minutes to find her purse, then another minute telling you about her sore knee, then Mrs Smith queries you about a gutter clean, then Mr Bloggs...
In an ideal world, no access issues, no problems, 8 houses an hour might be possible on compact work - but routinely doing that, hour in, hour out - throughout the day...
We did a commercial job this morning; we took our time; had a long coffee break and it worked out as £60 an hour. That's feasible, 8 houses per hour for one person aint, unless they're dolls houses.
I don't care what anyone says, I know what's routinely possible, and what's not.