Ray Stringer has been in contact and provided a photo of two First vehicles running in tandem on Lowestoft 's Hollow Grove 101 service yesterday
He suggests this is due to social distancing issues requiring more than one vehicle on the route. In fact the reliefs are only operated on some services infrequently during in the day as at present demand is not enough to increase the number of vehicles on the service throughout all of the day. These services are being financially supported by the government
My thanks to Ray for the photo and to First for the additional information.