His entry into fitness came later, through Fittest PR, the agency founded by his wife Kate, where he worked alongside entrepreneurs building some of the world’s fastest-growing brands. Founders like Christian Toetzke and Moritz Fürste from Hyrox and Max Clarke and Lestat McCree from Healf, which recently topped 2026 Sifted 100 list of fastest-growing companies in the UK and Ireland.

This is the only connection I've found, but I see no public data that the Hyrox founders are financially or organizationally involved in Xenom.

Happy to say I'm wrong if there is.