London Millennium Tower St Mary Axe, the name of a different skyscraper that stands on the site today. English Heritage had been one of the largest backers of the project until they withdrew their support, due to Heathrow Airport objecting to the disruption that such a tall building would have on their flight paths. The project was eventually cancelled and the site sold to Swiss Re, which created its headquarters, also designed by Foster & Partners. London Millennium Tower The London Millennium Tower was one of several ideas for the site of the former Baltic Exchange at 30 St Mary Axe, City of
30 St Mary Axe for sale with a price tag of £600 million. Potential buyers included British Land, Land Securities, Prudential, ING, and the Abu Dhabi royal family. On 21 February 2007, IVG Immobilien AG and UK investment firm Evans Randall completed their joint purchase of the building for £630 million, making it Britain's most expensive office building. Swiss Re booked a gain of more than £300 million from the sale. The new owners are seeking compensation from four of their former managers on the deal, in which about £620 million was paid for a building with a build cost of about £200 million,