So, you’ve been demoted from your Cabinet-attending role as Tory party chairman to a lowly junior ministerial role at DfiD. Do not fear! Here is your how-to guide to getting back round the Cabinet table in just three easy steps:

Step One

The government’s decision on airport expansion is a step closer post-election. The LibDems – most importantly Vince Cable – are out and Boris has been given a role where he would not have to resign if the Tory government backs Heathrow. A decision could be made in the next few months…

Step Two

One person who would surely have to honourably fall on her sword if the government chooses Heathrow is Justine Greening. As MP for Putney, opposing a third runway was her main local campaign for re-election. As she says on her website, “Justine has led our community’s campaign against extra aircraft noise from an expanded Heathrow… Justine will continue to stand up for the thousands of residents who are concerned about aircraft noise”. Could she realistically vote for a Heathrow third runway?

Step Three

Who is the junior minister at DfiD who could step up to fill the vacant Secretary of State position in an emergency? Ah yes, the minister of state, one Grant Shapps.

Barring any brewing personal scandal that might slight his good character, there is a route back to the Cabinet table…