Britons face chilly temperatures and snow this week, thanks to a blast of Arctic air.

Despite the approach of May, forecasters say that summer will feel a long way off.

Temperatures will struggle into double figures in the south of the country, but many areas will see highs of just 7 degrees Celsius (47F) - about 4 degrees Celsius below the average for this time of year.

Global temperature records were broken in January, February and March, Nasa announced last week, but the UK is unlikely to feel the benefit of this trend this week.