Q wrote:

There is/was a rule about taking big objects (including cases) on the
LUL over a certain size.

I'm sure that would be fun for LUL to try and enforce, but maybe they
should - I would make life so much nicer for those people who don't want
running over and blocking by 4' rolling cases

I've seen posters reminding people of this rule at Tottenham Hale.
They were aimed at people trying to take flat-pack furniture home from
IKEA Edmonton.

Simon