Green’s Dictionary of Slang

tie-up n.5

(UK Und.) an act of burglary during the day that requires tying up the occupants.

[UK]J. Hoskison Inside 206: Recently I heard the expression ‘tie ups’ for the first time. Apparently traditional housebreaking is now too dangerous with all the alarms. The simple solution is to go in during the day, tie up the occupants, beat them until they divulge the whereabouts of their wealth, then beat them senseless and do the burglary.