On Thursday I did Circle Line along with Northern Line. All quiet on the possum front. There must be more. Then down to the trap numbered 20 to 30 and then T22 had a hedgehog! Next one T25 had another hedgehog! And then T27 yet another hedgehog. Horrible. They not nice to move out of trap. Very smelly.
But good I checked because while hedgehog is in trap all dead no possum can go in! So a good day.