The Prime Minister said the move marked a ‘very important day’ for both sides as the US president announced the agreement was ‘done’.

There is currently a lack of evidence on the health effects of the pouches, which are often placed under the top lip.

Baroness Casey’s review into the grooming gangs scandal was published on Monday, and criticised the lack of data on the ethnicity of offenders.

Urgent action is needed to cut leaks, curb demand and build new water supply schemes, the Environment Agency warns.