UK weather: Met Office weather map shows where temperatures will hit 30C in mini heatwave
![UK weather: Met Office weather map shows where temperatures will hit 30C in mini heatwave](https://i2-prod.mirror.co.uk/incoming/article33268421.ece/ALTERNATES/s615/1_weather6.jpg)
The Met Office says heat will continue to build this week, because the position of the jet stream has changed - and is sending miserable low pressure systems up to the north and west of the UK