Final day of Southern Region steam on July 9, 1967, at Weymouth station

The image captures a scene from the final day of Southern Region steam on July 9, 1967, at Weymouth station. This date marked a significant moment in British railway history as the last steam-hauled passenger train service on the Southern Region ran from Weymouth to London Waterloo. 

The locomotive featured is likely a member of the Southern Railway's "Battle of Britain" or "West Country" class, designed by Oliver Bulleid and introduced in 1945. 

The final train on this date was the 14:09 service to Waterloo, hauled by locomotive No. 35030. 

The event was part of the general decline of steam traction on British Railways, with the official end of normal steam services occurring just over a year later on August 4, 1968. 
The image illustrates a busy railway environment with multiple tracks, freight wagons, and station buildings typical of the era.