There have for a long time been concerns about the “revolving door”, by which people switch between working high up in the aviation industry, and working high up in Government. The concern is that they may bring too much influence, from their earlier employer. Now it is announced that Vickie Sheriff it to become head of communications for Heathrow airport. Earlier she had worked for the Prime Minister, in 2013, with a dual role as official deputy spokesperson for the Prime Minister and head of news at Number 10.She went to the DfT and then Diageo in 2014. Heathrow’s director of PR, Simon Baugh, left earlier this year to work at the Department for Transport to take the role of head of communications. This is the job that was previously held by Vickie Sheriff. (Simon Baugh was not actually meant to be advising ministers on the new runway issue till 1st September, when he had been at the DfT for 6 months). Heathrow also appointed a new consumer PR agency in the summer. There have been several other high profile examples of the “revolving door” in the past, including Tom Kelly in 2009, who had worked for Tony Blair and then went to BAA as head of comms.