Series 4 of Ambulance (https://www.tvmaze.com/shows/21144/ambulance/episodes) shows 5 episodes aired with another due today. The show website (https://www.bbc.co.uk/programmes/b09393rd/episodes/guide) only shows 3 aired with a 4th due tonight.
It looks like E01-03 are correct but E04 and E05 seem to have a description from a previous series and an air date that doesn't match any shows. I've updated E04 to match the episode website, but am unsure what to do with the remaining episodes. The official website has no information about future episodes, unofficial sources don't have much information either (https://trakt.tv/shows/ambulance/seasons/4).