EH said it was ‘appalled’ by Blears’ decision to back the scheme despite her admission that it would impact the setting of Somerset House.
In statement yesterday, EH said it ‘did not consider this matter closed’ and that it was ‘considering its next steps’.
An EH spokeswoman said: ‘We are likely to have a better idea next week about what action we are going to take. We need to let the dust settle and weigh up our options.’
Coin Street Community Builders, the developer behind the scheme, said the development is more than just a building.
Group director Ian Tuckett said: ‘The scheme is not just about radically improving the environment of the South Bank, but also delivering vital facilities which offer alternatives to those at risk of obesity, gang culture and unemployment.
‘In place of a car park we will have London’s best public swimming and indoor leisure centre, the headquarters of Rambert Dance Company with its three dance studios, 329 new homes, a town square linked to Waterloo Bridge, possibly a new university faculty building and, across one road, the National Theatre, and across the other, award-winning housing co-operatives.’