High pressure causing nationwide disruption
There is a problem because of the high pressure - 1016mb rising to 1028mb - which causes the Inversion Effect which is distrupting analogue and Freeview reception nationwide.
This image shows French TV station, France 2, overlaid onto analogue Channel 4 on the English south coast. The France 2 signal is being recieved an extra 100 miles away from the transmitter.
Please see What is the Inversion Effect and why does it effect my Freeview TV reception?