@Adam90 I have been on the scheme since 2018 and I’ve seen the 1 series stay on for the longest, when the facelift came out in 2019 they removed the old one and added the current one a couple months later, so it is very likely that the new 2025 model will be on there as it is the cheapest BMW with practicality, convenience and it’s very popular.
I also believe the 2025 2 series gran coupe (based on the new 1 series) will also be refreshed on the scheme, these particular cars usually never get removed.