Nice set up Luke! What part of England are you located?
Dennis, no need to apologize. I agree with you and you are absolutely correct, it does work quite well. :)
I used to root in cups using an aquarium, a heat mat, and a grow light years back but my set up could only accommodate a limited number of cups. Not only that, I was experiencing problems with moisture control, fungal growth, and gnats. My cups were falling over and I got tired of reaching in and fiddling with them. My wife did not support the set up due to a number of issues as well. LOL!
I find that I can root more cuttings using the bag method and they're neatly tucked away in a small tub, out of the way, doing their own thing. I have more control over them and they're isolated so that if one or more get sick, the others are quarantined.
(just the doctor in me).