There is a press release out on the new routes.
https://mediacentre.britishairways.c...-to-it-network
Rimini (RMI) is 3 days a week, Monday, Thursday, Saturday, departing late afternoon from LHR, returning late evening. 15 May to 27 September.
Salerno (QSR) is 3 days a week, also Monday, Thursday and Saturday, similar timings 22 May to 25 October 2025.
Olbia (OLB) is 1 or 2 days a week, Wednesday and Saturday from LCY, leaving 12:30 hrs and returning early evening (for Saturdays, I see a slight problem there). 25 May to 28 September 2025, with the second service running from 16 July. This is in addition to the LHR services. Olbia is also serving EDI at weekends via BACF.