I am sure that Cardiff would be desperately happy to stake that claim, but I am not sure that is what you meant.
Filton? Ignoring the permanent traffic jam that is Cribb's Causeway shopping
centre.
Indeed.
Filton may have been a prime spot at one time, but I suspect it is too hemmed-in now for any serious development. Shame though 'cos it's a long peice of tarmac and very well connected. BRS is a pain to get to.