The first two batches were delivered without whiskers (but would have the added later). Batch one would be in the darker 'Loco Green' carrying the 'lion on wheel' logo. Batch two may have been delivered in the lighter "Multiple Unit Green", they had the coaching crest (and initially these were handed) from new. The images shows M50136 (and presumably 56092) in Birmingham New Street waiting to leave with a British Industries Fair special to Castle Bromwich on the 6th May 1957. Michael Mensing.
The green lining followed the Met-Camm style having three lines instead of the regular two.
Batch three were delivered with whiskers from new, and they would be added to the earlier vehicles, as show in the view of M50136 at Stockport (Edgeley). Stuart Mackay Collection.
By the time the batch three (51xxx vehicles) were delivered the darker 'Loco Green' would by then be again the standard.
In the early 1960s vehicles would emerge from works in Loco Green with yellow panels. When treated at Doncaster, they would recieve the revised style of lining matching other DMU types. The image shows a DMBS in the condition in Doncaster Works in December 1966. David Faircloth.
Starting in 1965 the NER vehicles would start to carry the NE prefix.
I have seen no evidence of the vehicles carrying the short-lived early blue liveries with small yellow panels or yellow cab doors, so standard rail blue would be the next livery change.
This Class 111 has '2M97' just barely visible on the headcode blinds when seen on a rainy day at Goole in 1970. John Law. After the 4-character route indicators fell out of use, sometimes these were painted yellow.
Some sets underwent the 'refurbishment' scheme on the 1970s during which they emerged in rail white with a rail blue stripe. An example is E51552, seen on the front of a four-car set at York, date unknown. Stuart Mackay Collection.
Their final livery was blue and grey. The majority carried PTE logos, I found few images of them carrying the BR double arrows. This was one - on September 20th 1981 at Sheffield is three car set E51552 + E59106 + E51542. Gerard Fletcher.
Given their operating area they often carried PTE markings. This is West Yorkshire branded E50281 leading away from Hull Paragon on 3rd July 1981. Bruce Galloway.
Red buffer beams seemed to be common in this era. This image shows MetroTrain branded 78972 at Keighley on the 10th August 1985. Bill Read.
The DMBS in this image (E51541) is not carrying any markings. It is departing Leeds with a 15:35 Leeds - Skipton local service in 1983. Graeme Phillips.
Details about the preserved Class 111 vehicle can be found here.
Many of the works photos are courtesy of the Kevin Dowd Collection.