(01 Jan 2025, 2:47 pm)Adrian wrote Hardly seems worth the risk, over a maximum £2.50 fare. 

I don't think you'll ever combat overriding, but there's more than enough CCTV on a bus to pass it onto the Police and let them deal.

Warm cell and free food. 
More than they're often getting elsewhere. Often safer too. 

CCTV and the police isn't really a deterrent for some.

Watched a lad in an urban supermarket walk past the security guard, grab something and walk straight back out the other day.
The security guard knew exactly what the lad was doing. Wasn't worth his time, energy or safety stopping him.