there are lots of window cleaners all pay cash in hand and the owner only puts himself through the company. i clean for a tax inspecter & i was telling him there making more cash than me, he said give me car reg and name of the firm & i will put a stop to it. there is one firm been going 30 years and his two lads are cash. i worked for him when i was a boy & he said i was self employed, i went to work for my dad & had to pay over £3.000 in tax /ni i was sick