When the British Empire shrunk after WW2 1000s of ex pat British bureaucrats who'd spent their lives administrating and ordering the natives about in far off lands like India and Africa had to come back home. They then set about inventing jobs for themselves and regulations to inflict on the native peoples of Britain. Over the decades this spread like a virus through all parts of national and local government creeping into society to this very day where you now see the legacy manifest itself in the most pitiful, petty and obstructive ways.
You see.....these people, the state, the regulatory bodies and training providers make up more and more rules to justify their own existence and charge you top dollar for taking their courses and achieving their 'certificates'. Take the 'refresher' training for 'experienced chainsaw users' the HSE advocate - it's a perfect example of training providers lobbying the HSE to endorse this type of pointless 'update' training in order for the training providers to fleece money out of perfectly safe and highly experienced treeworkers who don't need 'retrained'. THIS IS A MONEY MAKING SCAM.
It's basically a protection racket on a huge scale, you pay the training providers or you don't get the contracts. It's not really about raising the awareness of safety in the industry (although they'll always tell you it is), it's about raising the bank balance of the training providers, colleges and the HSE and keeping them in jobs.
Don't get me wrong I strongly believe that there should be an emphasis on safety in all places of work. Most reasonably sensible people are born with a certain instinct for safety, it's is a state of mind your either born with or your not, if your not then you'll be found out very quickly in the tree business regardless of how many NPTC units you have. Take LOLER for instance in relation to treeclimbing equipment - if you can't recognise faults or dangers in your own climbing equipment without the need for a so called industry expert to identify them for you, you should seriously consider getting out of the industry, you hang your life off this stuff for Christ's sake.