"There should be only one railway=station element for each station (refer to One feature, one OSM element)". 
https://wiki.openstreetmap.org/wiki/Tag:railway%3Dstation

https://www.openstreetmap.org/node/26479890

https://dataportal.orr.gov.uk/statistics/usage/estimates-of-station-usage

"As of March 31, 2024, there are 2,585 mainline railway stations in Great Britain, according to the Office of Rail and Road (ORR) data portal." (Due to be updated next month.)

"Respectfully".