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New gig for London Stock Exchange Group finance chief

Published: March 20, 2026 at 8:36 am

Gamma Communications plc has appointed a new CFO to succeed the departing Bill Castell.

The communications technology firm said Damien Maltarp will succeed Castell, who leaves at the end of March to take up an executive role at private equity-backed Arrive, a global mobility platform.

Maltarp is currently group financial controller for London Stock Exchange Group plc and spent over 10 years at BT Group plc, including roles as CFO of BT Enterprise, its UK B2B division, and as CFO of BT Wholesale & Ventures. He originally joined BT in 2010 as investor relations director, leading the function for four years.

Earlier in his career, he spent 10 years as an equity analyst in the telecoms sector, including roles at Credit Suisse, JPMorgan Cazenove and Bank of America.

He will join the group and the board at the latest in September 2026, with the exact date to be confirmed.

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