With still nine months to go, nearly all of the 2010 floor space has been filled, which means expansion of the show for 2011 is likely.
Marbel, MV Sports and Leisure and Martin Yaffe are among those companies returning to the Fair this year.
This Friday, 30th April, is the date that eligible exhibitors must pay a 25 per cent deposit in order to guarantee a specific stand for 2011 and to qualify for the profit share scheme.
Payment of the deposit entitles both 2010 and 2011 exhibitors to a three per cent early booking discount.
"We have been really pleased with the support for Toy Fair 2011 and the enthusiasm shown by new and staple exhibitors to be at the show next year," said Simon Pilling, BTHA Fairs and Events Manager.
"This time last year, we were thrilled to be on track to fill the Grand and West Halls. We never dared to presume that just 12 months later, the equivalent of 99 per cent of that space would be sold, especially nine months out from the show."
Some 180 toy companies exhibited at Toy Fair 2010 as the show returned to Olympia in West London, including 65 first timers and 39 in the Greenhouse Area.
“The change to a three-day format in 2010 helped retailers to have an even more productive visit and the increase of suppliers on the show floor in 2011 will ensure the effectiveness of their visit will be further enhanced,” added Pilling.