This means that there are some solutions but they would require large scale infrastructure projects... which are not materialising and which the country is terrible at and so we get floods in winter and water restrictions in summer.
"A new potable water reservoir hasn’t opened in the UK since 1992" (2022) [1]
During that time population went from 57 to 69 million... So there is also the general lack of investment in infrastructure, nevermind climate change, which is a common pattern in the country.
And, food for thought:
"There is a seemingly direct link between the 1989 privatisation of water companies in the UK and the ceasing of new reservoirs being built"
[1] https://www.newcivilengineer.com/latest/the-challenge-of-bui...