The Olympics will adversely affect many parts of the economy. For example, London theatres are finding bookings very low in July/August. Tourism elsewhere in the UK is suffering a lack of inbound bookings for fear of congestion/high costs. Those who work in London are likely to suffer crowded trains/tubes/buses, making life difficult, to say nothing of the loopy decision to close traffic lanes in London to allow "VIPs"
easy access to Stratford.
Congestion costs UK plc big time!