Sisu Capital, the distressed company investor trying to put together a takeover bid for Welcome Break, the struggling UK motorway services provider, is demanding urgent talks with its current owner Investcorp.

Sisu Capital, which last week used its blocking stake in Welcome Break's bonds to throw out a controversial £381.5m (€573.1m) refinancing proposal tabled by Investcorp, has also raised the stakes by insisting it will except no less than the full face value of its bondholding.