I'm usually a calm person - but the bags on seats thing is one of the things that does enrage me!

That, and everyone sitting on the outside seats near the aisle even if they're staying on 'til London Bridge - because then you're forced to complete an awkward obstacle course trying to climb over various pairs of legs (usually stretched right out) and oversized bags while trying to get to that elusive empty seat by the window.

Some people are so incredibly selfish - and shameless it seems.