Labour have written to the cabinet secretary calling for an investigation into whether Theresa May’s chief of staff broke rules on former advisers lobbying government.
The Times reported this week that Fiona Hill did not inform officials that she had taken a job with lobbying firm Lexington Communications after she stepped down as an adviser to May at the Home Office.
Under transparency rules, all former ministers and advisers must get permission to take any job that could conceivably see them benefit from their time in government.
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Labour have now written to the cabinet Sir Jeremy Heywood, asking him to set out whether any rules had been broken by Hill, including whether she breached her government contract and who her clients were at Lexington.
The shadow minister for the civil service, Louise Haigh, argued there was a wider problem with the amount of information included on the lobbying register, introduced under the coalition government.
“Due to the very weak nature of the lobbying register we have no information on the clients [Ms Hill] has personally advocated for over the last year and what interests she may have been representing,” she wrote to Sir Jeremy.
Shadow cabinet office minister Tom Watson also raised concerns, saying: “This is much more serious than David Cameron handing out honours as it concerns someone who is at the heart of government right now.”