A few years ago now but i used to work for another guy who had a large round in Kent with 5 men each pair completing roughly £400 of work a day 5 days for four weeks and £200 for the single guy, then he had a round in Billericay £400 a day for four weeks. Very hard to manage but with persistence anything is possible...
Averaging roughly £1600 a day, £8000 a week (baring in mind he really did go through some messers and bad employees' and was totally paranoid that everyone was out to get him)
That 99% domestic and all traditional, Kent work was ok but not greatly priced the Billers stuff was well priced. Neither were that compact
At a good pace i personally think two guys should easily clean £400 a day in 6 to 7 hours and half that for one man.