ive picked up my 2 best cleaners by fluke.
i took a boy on from gumtree, he knew a good construction window cleaner - i contacted him for weekend work and he was getting his hours reduced at his place of employment due to them losing work - i took the hit and offered him full time. best thing i've done.
I bought out another reputable company and took his staff, a great decision as the 2 cleaners i gained are invaluable.
I also got one off of gumtree who is good enough - but as above, needs encouragement and watched, which i dont like too much but i need staff and he is recognised on that site so i dont want to rock the boat too much