I use Bontrager CX0 33C TLR CX tyres, here for example st :
http://www.pedalon.co.uk/acatalog/bontrager-cx0-tubeless-ready-cyclocross-tyre.html
Reasonably expensive at £36.99, especially compared with those Halfords ones suggested above at only £8 but possible comparing apples and oranges, I don’t know.
I run these Bontragers on ordinary rims converted to tubeless with Stans tape and they hook up perfectly with no faff and no leakage. I pump them up hard (50-60 psi) for pure road rides and they don’t buzz or hum at all, and don’t “feel” draggy despite their width compared to a proper, skinny and bald road tyre. STRAVA runs around a well-worn loop suggest they are barely any slower than roadie tyres I’ve done on a proper road bike for comparison. To be honest, they seem like magic! They surely MUST be a little slower than a road tyre and maybe I’m just sub-consciously putting in the extra effort to compensate?
Off-road I let a load of air out and my Cube Cross Race Pro deals with roots and the odd stone with a lot more forgiveness. The Bontragers are certainly not ploughed muddy field type tyres as they have no knobblies on the centre part of the tyre thus their road prowess I guess? The edges are knobby and they deal brilliantly with the Surrey Hills where I live. I’ve not had a single puncture or leakage and for that reason this has almost become my go-to bike.
Only time they’ve puncture was when I slit a 2-3cm gash in them on the North Downs side where it’s flinty. Those razor blade like stones didn’t give them a chance though I’m not sure any CX tyre would deal well with that?
Loamy, forestry trails and certainly gravelly tracks are what these tyres excel at. I can recommend!