The taxman has so many sources of income information gathering that very little escapes his attention.
Presently two areas of interest are being examined by HMRC.
One being employees who have a second income. The other area being houses being purchased to let and receive rent.
The former is resulting in taxpayers, who have a full time job being pursued for having a second income. For example dog clipping, scrap and household clearances, mobile hairdressing, photography (weddings etc), cleaning, odd jobbing, gardening, selling for a commission and anything seen as a second income.
Because of technology and information gathering nothing escapes the careful eye of the Tax Gatherers.