Cameron preparing to spend most of August on holiday

Prime Minister David Cameron leaving 10 Downing Street, London

Parliament breaks for the summer this week and the Prime Minister is reported to be planning a three-week break that he will divide between Portugal’s Algarve, Cornwall and the Scottish island of Jura, where his father-in-law, Lord Astor, has land.

Downing Street said it does not comment on the premier’s holiday arrangements but insisted Mr Cameron will continue to be running the country throughout August.

Mr Cameron has previously been forced to interrupt his family holidays, including a 2011 visit to Cornwall as Muammar Gaddafi’s regime collapsed in Libya and a trip to Tuscany as riots broke out across England the same summer.

In 2013 he returned to deal with the evolving crisis in Syria and last year he abandoned a trip to Portugal after civilians were trapped on a mountainside in the Kurdish region of northern Iraq by advancing Islamic State (IS) jihadis.

He later went on to holiday in Cornwall, insisting that “wherever I am, wherever I am in the world, I am always within a few feet of a BlackBerry and an ability to manage things should they need to be managed’’.

But he has also previously admitted to being hit by the problem of mobile reception “not-spots” in the family’s favoured English holiday destination, which he said could be “very frustrating”.

The premier and his family have visited Cornwall every year since he took office and his younger daughter Florence was born in the county in 2010.

She was given the middle name Endellion after the village of St Endellion where they were staying.

During the last parliament, the Camerons also visited Ibiza, Majorca, Lanzarote and Granada.

Newly-elected Liberal Democrat leader Tim Farron will spend the first week of August holidaying in northern Spain.

Those vying to take control of the Labour Party are likely to remain in the UK for much of the summer as the battle to succeed Ed Miliband at the helm intensifies.

The House of Commons goes into recess at the end of Tuesday’s sitting for a 47-day summer break before MPs return on September 7.