UK Inbound's chief executive Mary Rance also warned that uncertainty over the government's tourism strategy and aviation taxation could pose a threat to business tourism.
UK Inbound is working in partnership with organisations including Visit Britain, Visit London and ETOA to counter opinions that Britain, and particularly London, might be too busy or expensive to visit in 2012.
Rance said that tour operators have enjoyed a good summer and that the industry is in optimisitic. However, she added that barriers to growth are looming and work needs to be done to convince businesses that London can handle the Games.
"The rise in aviation taxation could seriously hinder the UK’s competitiveness, as well as uncertainties surrounding the Government’s forthcoming tourism strategy.
"The UK is completely different from previous host countries, both in terms of our ease of access and our intrinsic strengths, while the infrastructure improvements generated by the 2012 Games will make us even more attractive in the long term. We have more than enough capacity here and we need to reassure potential visitors that they can enjoy this fantastic, dynamic destination just as much in 2012, if not even more so."