Good luck to the OP. but life is difficult enough for people with an HGV licence at the moment, anyone and his uncle can drive a van so prospects are hardly going to be better there.
In his position I would visit local firms, introducing myself and handing out a flyer which I had printed up on my PC,
What I would never do is sign up to one of these scam firms who exploit the desperate and demand a £700 “membership fee” for van work.