"Associated Company" shall mean a company or undertaking (which is not a Subsidiary or Holding Company of the Claimants or either of them or of a Group Company) of which more than 20 percent of the Equity Share Capital is for the time being owned by the Claimants or either of them or a Group Company or which for the time being owns more than 20 per cent of the Equity Share Capital of the Claimants or either of them or a Group Company. "