The new corporate scheme, launched earlier this year, also includes The Barbican, SECC, ACC Liverpool, Visit Manchester and Mexia Communications.
Visit London's head of associations Becky Graveney said: "We are delighted to join forces with ABPCO and proud to be a part of its corporate membership scheme.
"It is particularly relevant for London to support ABPCO and to engage with its membership to ensure that members are fully up to speed with the huge opportunity and new developments in London in preparation for the influx of business to the capital. With the recent launch of the new ICC London Excel and the London 2012 Olympic Games just around the corner, there is much to get excited about. We look forward to developing lasting relationships with ABPCO members across the country."
ABPCO chair Rebecca Cadman-Jones said: "We are delighted to welcome Visit London on board as our newest corporate member."