Porter is set to take up a new role working in international sports event management, which will leave England Boxing searching for a replacement in the coming months.

The official took up the post on an interim basis in September 2015, following the departure of Mark Abberley, before securing the position full-time in May following an open recruitment process.

"I have thoroughly enjoyed my time as chief executive of England Boxing however the opportunities I am taking up will move my career in the direction I want it to go and have come along a little earlier than I had anticipated," said Porter.

"I remain fully supportive of England Boxing and the chairman and Board of Directors and the work that is being done to modernise the National Governing Body (NGB) and support grassroots clubs in England.

"The past year has been very exciting and seen some great leaps forward including significant progress in the England Talent Plan; hosting the International Boxing Association Joint Commissions event in England for the first time and the successful launch of our new data and registration system, the Vault.

"More than 800 boxing clubs have now signed-up to this new system which will significantly improve communication between England Boxing and its members at the grassroots."

Porter had taken on the role having enjoyed over 30 years of experience in boxing, including being the competition manager at the 2015 European Games in Baku, as well as serving as the field of play manager at the London 2012 Olympics and the technical operations manager at the 2014 Commonwealth Games in Glasgow.

Additionally, he spent two years as a boxing development officer at the Amateur Boxing Association of England, where he was tasked with growing participation in the sport in South Yorkshire.

England Boxing chairman Caspar Hobbs paid tribute to Porter, claiming he had played a key role in modernising how boxing operates in the country.

"Boxing in England has made significant progress under Paul’s leadership and, on behalf of the Board of England Boxing, I would like to thank him for the contribution he has made to the NGB and the development of the sport in his time as chief executive," Hobbs said.

"Paul has played an important role in our drive to modernise the way that boxing operates in England and, whilst it is disappointing to see him depart, myself and the Board wish him every success in his next venture."

The chief executive post is due to be advertised in December, with interviews expected to be held in January.