Apparently, LUL pays £1,300 a go for a Track Retrieval Device.
That might sound quite reasonable if it were actually a 'device' in the popular understanding of the word. But it is a stick with a sticky pad on the end. Hence its usual moniker among station staff - the 'sticky stick'.
Private companies which make stuff like this must think that LUL is run by a bunch of suckers who will put their hands deep into their corporate pockets for any simple gadget they can come up with.
Shame their hands won't go so deep so easily in our pay talks, but at least when they claim to have no money, we can deploy our own Truth Retrieval Device.