Definition of "non-stop"

In addition to the non-stop Heathrow Express service, there is a Transport for London stopping service to London Paddington: this is the Heathrow Connect service taken over by TfL in May 2018.

2019 October, John Glover, “Heathrow rail expansion”, in Modern Railways, page 70

The through Moorgate service has been most handsomely speeded up, and suburban trains in both directions now run non-stop between Kings Cross (Underground) and Elstree.

1960 February, “The dieselised St. Pancras suburban service”, in Trains Illustrated, page 95

The Victoria-Brighton non-stops, the Victoria-Eastbourne and Hastings, Victoria-Worthing and Littlehampton, Victoria-Bognor and Portsmouth and Victoria-Oxted line services were, with a very few exceptions, all re-routed to and from London Bridge.

1960 March, “Talking of Trains: Victoria shut-down”, in Trains Illustrated, page 136