A trio of class 66s are seen stabled in Wembley yard between duties. To the right is 66187 and the left 66143. The latter is still wearing the filth from its times when it was being used on railhead treatment trains with just the area around the number and cab ends being cleaned, see.... https://www.ontheupfast.com/v/photos/21936chg/28348130404/x66143-11-53-west-hampstead-north