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Executive team

The Executive team leads the organisation and the staff team in the delivery of the strategy and programmes, and reports on performance to the Council. They advise and support the Council in the development of the organisation’s strategy and their governance responsibilities. 


Tom Grinyer, IOP Group Chief Executive Officer

Tom, who joined the IOP in June 2022, has 25 years’ experience working for membership organisations.

Find out more about Tom

Rachel Youngman, IOP Deputy Chief Executive

As well as being IOP’s Deputy Chief Executive, Rachel is also the executive lead for our international programme, the IOP’s new UK and Ireland influencing campaign which seeks to increase the diversity of young people continuing post-16 physics education and the progression and recognition frameworks IOP provide as a professional body.

Find out more about Rachel
Tony McBride

Tony McBride, IOP Director of Policy and Public Affairs

Tony joined IOP in January 2020 and leads IOP's policy work, the IOP's work in Ireland, Scotland and Wales and is executive lead for IOP's Productivity Programme.

Find out more about Tony

Louis Barson, IOP Director of Science, Innovation and Skills

Louis leads the Science and Innovation, Education and Programme functions for the IOP, bringing an international background, with experience of emerging technologies and business innovation strategy. He is also executive lead for the Ecosystem Programme.

Find out more about Louis

Sukhraj Dhadwar, Chief Financial Officer, IOP Group

Sukhraj, who joined the IOP in August 2021, has responsibility for governance & compliance and finance.

Find out more about Sukhraj

IOP Publishing

Antonia Seymour, Chief Executive, IOP Publishing

Antonia, who joined IOPP in 2018, has more than 22 years of scientific, technical and medical publishing experience.

Find out more about Antonia