This was extracted from the "London Underground" part of the
GWR▸ Journeycheck site this afternoon.
Severe delays between Paddington and Heathrow Airport due to a trespasser on the track in the Hanwell area. GOOD SERVICE between Liverpool Street and Shenfield. London Underground are accepting their tickets.
I'm sure this forum could come up with one correct answer and several humorous versions for the meaning of the final sentence.
If it's any help, the same data feed says
we are fixing a signal failure at Aldgate.