Nancy Shevell has announced in a news conference that she is standing down from her position as a board member of the MTA - Metropolitan Transportation Authority.
The MTA oversees the transport system in New York, meaning Nancy has been mainly based oversees.
Since becoming Lady McCartney in 2011, it seems she has been spending more time in the UK, where husband Paul owns both a townhouse in London and a huge estate in East Sussex.
Despite not giving a precise reason for her departure from the board, she told reporters that "It was time".
The couple will have their marital base in Britain, but will still spend time in New York where Nancy owns property.
Photo: © Rex