For the money you have to pay out to do the course , i’m not sure it’s financially viable. Unfortunately , i can’t remember the name of the company that i did the course with , just that it was in Chesterfield. Of course , you have to find accomodation costs too if its away from home.
I did my 16th edition wiring in 2005 over a 6 week course…and it cost me a few grand to do it. Not long after that i got my present job and have never done any serious electrical work since so in hindsight , for me anyway , it was a wasted process.