Met Office issues thunderstorm and heavy shower warning

Heavy thundery showers have been forecast across Wales, threatening an abrupt end to the UK heatwave.

A Met Office yellow "be aware" warning is in force between 11:00 BST and 20:00 on Friday.

Officials say there is a risk of flooding with some short term loss of power due to lightning strikes possible.

The poor weather could bring travel disruption and difficult driving conditions.