David Cameron could not have made immigration demands to the EU without the support of Theresa May.
This is according to Tim Shipman, the political editor of the Sunday Times, in response to May - now the Prime Minister - being accused of softness in regard to migrants.
Shipman explained how the crux of these allegations dates back in 2014, when Cameron was putting together his plans to take to Brussells.
He told Julia Hartley-Brewer: "He knew immigration would be the big thing during the campaign, and he knew one of the big things would be a cap on the numbers of people coming in from the European Union.
"Angela Merkel was not likely to support the idea, and both Theresa May and Phillip Hammond suggested he drop that from the speech.
"This speech set the tone for the entire re-negotiations. From that point forward, David Cameron's immigration demands focused entirely on cutting benefits for migrants rather than numbers.
"For many people, they feel this was where the referendum was lost, as David Cameron could not have made immigration demands to the EU without the support of his home secretary."