Heathrow Express 387138/387133 (16.07.2024)

Though ex-GWR units, I managed to snap these up out of place given the fact that they're now branded up for the Heathrow Express route, admittedly a bit further away from here, so it was a sight to behold! 387138 and 387133 head through Sonning with an ECS from Reading Traincare Depot-London Paddington.