We decidied to give the Wagtail roost another try and were pleased to see that the coach park was relatively clear close to the roost trees. Initially, there was some wandering around the parking area but the Pied Wagtails soon disappeared towards the petrol station and things were looking pretty bleak as they congregated on the roof. We managed only 4 birds of which 50% were a bi-catch of Robins. There seemed to be fewer wagtails and we believe the roost has shifted to some conifers close to the services entrance.