2024 experienced the wettest period since records began and extreme rainfall events are becoming more frequent because of climate change. So what's being done to protect us from flooding - and is it enough? The Government has said it will build 1.5 million new homes by the end of the current parliament - but File on 4 Investigates has discovered that hundreds of thousands of homes have already been built in areas at high risk of flooding. And a measure to protect new properties against flash floods caused by intense rainfall has never been made compulsory - despite being introduced 15 years ago.

Reporter: Adrian Goldberg