5414 1956c Westbury
That looks like Old Oak Common's 6015 on the left, and the train is the 8.30.a.m. departure from Plymouth to Paddington , complete with the' Mayflower' headboard and appropriate Reporting Number. The' King' shows that it's had new front frames and inside cylinder block fitted not too long ago whilst at Swindon Works , as it has the modified top to the inside cylinder block and valve spindle covers clearly visible , together with the strengthened lifting holes in the main frame front. If it is 6015 it would have been the first double chimney' King'