Way back when I first stumbled across Chris the plumber on youtube , he was putting up stud walls, tiling bathrooms and fitting kitchen sinks.
I presumed he was and still is a handyman who dabbles in electrics on the side. I haven't watched any of his stuff for a good while now but presume he is still fitting bathrooms and doing a bit of wiring on the side still...
As for Del , still think he is the best honest celeb spark out there , not fancy , doesn't blow smoke up his own arse and reminds me of the site sparks i worked with as a youth