KUBE, which has a digital site in the City and a litho plant in Bromley, approached the BBC about producing the variable data cards.

We said that we would offer the service to our client list, which includes some of the big City financial and legal institutions, said KUBE sales director Chris Longley.

KUBE, which has designed 24 cards specially for the appeal, has not released details of how many cards it expects to produce.

The cards will be produced on the firms Bromley litho equipment, including two Heidelberg Speedmaster 74s, before variable data is added at its City digital site, which has Heidelberg Digimaster 9110 and Xerox DocuColor 2060 presses.

KUBE launched a website, www.kubekards.co.uk, for the service yesterday (10 September) and held a boat trip for its clients on the Thames.

The companys client list includes Deutsche Bank, the Daily Telegraph, Christian Dior UK, KPMG and Red or Dead.