I would note that CB sets remain available, and are completely licence free now. They operate around the 27Mhz band, notionally at 4W (but are, or were, regularly boosted way over that) and run expensive compared to the 400Mhz+ handsets. I haven't seen handheld units for sale, although there's no reason why one couldn't be produced, the only technical issue being that the antennae need to be longer than for 400Mhz+.
I have no idea if anyone is still using them. I haven't used one since 1990 or so, when it went toxic and folk just started playing music or shit-talking all over the CB channels.
https://www.ofcom.org.uk/__data/assets/pdf_file/0022/84406/citizens-band.pdf