Icap Securities and Derivatives Exchange – best known as the listings venue for Arsenal Football Club and brewer Adnams, and once called Plus Stock Exchange – will celebrate the first anniversary of its launch next month.

When the world's largest interdealer broker bought the exchange 16 months ago from the ashes of Plus Markets Group, which was forced to wind down its business amid financial difficulties, it was widely reported to have been snapped up for one reason: Plus's prized exchange licence.