Only time I’ve ever jumped a red is at automatic lights where they can’t detect a bike.
I even stop at a set on my commute on a very quiet road (boat ramp one side, pub car park the other), which has an uncontrolled bridleway crossing the road right next to them!
Mainly I do this because I do think it is important for us to be seen to obey they highway code. It gives the anti-cyclist brigade one less stick to beat us with (and means I can stay seated on my high horse).
The other week I was stopped at them when two old boys (i.e. late 60s) on equally creaky tourers came past me and went straight through on red with barely a glance.
As they went through one of them looked guiltily back at me and cheerfully called out “I admire your respect for the law young man” 😀