Soldato
Why would you even contemplate throwing £50 at something which you don't need any qualifications (or any great skill) to do?
You I suppose are fortunate that your actions have never injured or killed anyone. Sadly other people have not been that lucky, who have I'm sure had the same attitude as you.
In the gas trade we have a monthly magazine that shows examples of all the illegal and dangerous gas work that is still carried out today, it also sadly has reports on the injuries and deaths that occur, and the people that are prosecuted, fined, and sent to prison.
So, in the grand scheme of things.. why on earth would you put you and your loved ones at risk over a piddly £50? Perhaps your priorities are a little different.
Mick