For the Bedford to St Pancras railway line known colloquially as the Bedpan service, see Thameslink.
The locomotives were put to work on King's Cross outer suburban duties such as the Cambridge Buffet Express as well as services from Kings Cross to Moorgate sub-surface platforms via the 'widened lines' (more recently, part of Thameslink).
Depots for the new rolling stock will be built at Hornsey and Three Bridges.
Services 'assumed to operate through the Thameslink core in 2018' feature an 8-car Tattenham Corner to Welwyn Garden City service.