Well we are still doing it, no idea how many are regulars but abut 30 reviews posted so far today (19.34 UK time)
I've taken a temporary break from punting whilst the virus is still (apparently) rife in the country. That's my decision, and I don't judge others who may have come to a different conclusion based on their own circumstances having weighed up the risks.
Had I still been punting, i would consider the risk of being caught as being very, very remote. Police rarely have enough time to investigate "real" crimes at the best of times; we've all herd the stories of burglary victims reporting the crime and simply being given a crime number with no hope of any officers, em, investigating it). These are strange times, and adding lockdown breaker investigations to their workload, especially in this more relaxed version of lockdown, just doesn't make sense unless they are targeting large get-togethers. If a WG is doing incalls on a conveyor-belt basis and has some problems with her neighbours then this might, just might attract the attention of plod but you'd have to be pretty unlucky to be the one they catch en flagrante. Plod stopping people out and about just won't happen as long as many businesses are still operating as normal - there are just too many people.
So although visiting a WG during lockdown will be (in most cases) illegal the chances of being caught are probably negligible.