Dave - you make a very good point and perhaps I've again made an assumption. As the latest photo of 70039 was taken from the York Road platform Tim would have had to sprint along the side of Kings Cross Station and on to the main concourse to photograph the loco at the buffer stops. It's possible indeed, but how likely? Well, knowing Tim as I did it wouldn't surprise me if that's exactly what he did! However it's rather more likely that the photos were taken on two different days as the data attached to each photo suggests.
As far as I remember it was not unusual for the same loco to be used on the same service with the same stock over a significant period of time. In the case of these photos they were taken on adjacent months so there's no reason why one shouldn't have been on 31st May and the others on 1st June. We don't have a definitive answer but I'll admit that's entirely possible.
Two photos of A1 60133 Pommern at Finsbury Park in June 1963. This was a Leeds, Copley Hill, engine at the time, moving to Ardsley in September 1964 from where it was withdrawn in June 1965. (SLS). Disposal was to Clayton & Davie at Dunston on Tyne where it was despatched by the end of August. (Rail UK).
Class A2/3 60500 Edward Thompson at Potters Bar in February 1963. We last saw this loco on img1683, 1684 and 1685 in post #1973 at Kings Cross in May the same year. It was withdrawn from New England in June the same year. (SLS). It was scrapped at Doncaster Works by the beginning of September.
A3 60046 Diamond Jubilee at Potters Bar in February 1963. We've seen this loco previously as img1319 in post #1566 also at Potters Bar in July 1960, then img1474 in post #1761 at Kings Cross in March 1962 and then img1665 in post #1761 at Holloway Road in March 1963. It was at New England at the time of this photo going to Grantham in April. It was withdrawn from Grantham in June 1963. Trough deflectors were fitted in October 1961. It was seen at Doncaster in August 1963. (SLS) It was scrapped at Doncaster Works in August 1963. (Rail UK).
Brian