Okehampton service on Platform 4 at Exeter St David's

[150249]

Earlier, when I passed Exeter St David's level crossing, I saw 150263 operating an Okehampton service from Platform 4 (usually the down line) instead of Platform 3 (usually the up line). I believe it was around 1640. Realtime Trains says that it left from Platform 3 but I swear I saw it on Platform 4.

Furthermore, there were no trains in the station that would stop it from using Platform 3 and the train looked like it was about to leave - two minutes late. I didn't know that trains from Exeter Central could even go into Platform 4.

This may seem oddly specific but would anyone know why this happened?

 

[louis97]

There was a set swap. The train from Central arrived on platform 3, with the replacement unit on platform 4.

 

[150249]

There was a set swap. The train from Central arrived on platform 3, with the replacement unit on platform 4.

Ok! Thank you! Thought it was a bit strange