There are plenty of platforms which see less use than Maidenhead platform 1. Some are only used when engineering work dictates use of the fast lines through a station for stopping services. Apart from the point raised about New Malden, which is probably a good example, others with very infrequent use would be places like Purley Oaks and South Croydon where two-track railway closing the fast lines is generally only at weekends.Maidenhead platform 1 has a locked gate which is opened when trains stop there.. which is infrequent but regular. Which station is likely to be the rarest use of a locked platform? Is there a way of working this out?
Wimbledon gets (got anyway) regular fast line calls on SundaysThere are gates on fast line platforms at Earlsfield and Wimbledon too. I think they have passenger release handles as occasionally trains get diverted to fast lines at short notice, so has to be way of exiting platforms for those alighting.
Of course there are whole stations not normally used so presumably locked off, such as Newbury Racecourse. Aberdare was another example prior to the line reopening as it had been retained for excursions.
Has had for about 25 years.Newbury Racecourse has a regular service?