Another vote for Windy. They now have the UKV High-res model (provided by The Met Office). The live rainfall radar is also Met data.

The other one to try is The Met Office official app. Depends what you’re after really. If it’s a general reliable forecast, official Met app. More layers, compare different models etc., then Windy.

Signal and WhatsApp have also said they’d likely leave the UK market if this bill is passed as it currently is.