Deuxmil Marine, a yachting services group, is set to close on its reverse takeover of broker YCO this week, which it has bought in a shares and cash deal worth about €15m (£12m, $24m).

London-based Deuxmil largely provides refuelling services to owners of the world’s super-yachts, a seemingly recession-proof community whose membership is being constantly swelled by Russian billionaires.