Go for it, Keep it under £12500 a year (profit not turnover) and pay no tax or keep it under £5200 if you don't want to pay Ni.
Don,t forget it's £12500 profit and you can claim for your van/mileage, phone,tools and even part of your house bills.
I was put off by them telling the Mother in law that they would never cut off her electric at times of high demand because she was over 70 yeas of age,
Does that mean people under 70 would get cut off first.??