Andrea wrote:
Are there ever any ticket inspections on the London Underground? Yes,
there are barriers at all stations but I would have thought that LUL
would also have roving patrols of inspectors randomly checking tickets
on board tube trains to catch any fare dodgers?

I see them quite often, they don't wander round inspecting tickets so
much as target a station in a big group.

There were a load at Finsbury Park (which has no barriers) last week
with police officers and dogs. At FP they even put up a notice in the
ticket office listing what they found last time.

Often ticket inspectors target interchanges and stand in the passageway
checking them. AIUI there are usually uniformed inspectors with
plain-clothed ones behind so that those who turn the corner, spot the
inspector and then turn back are also caught