Which is the best Royal Park for garden-loving visitors? The more I think about London’s Royal Parks, the better I like them. So I can’t give a favourite. But if a gardening friend was coming to London and said ‘I’ve only got time for one Royal Park – which should it be?’ I would say ‘Regent’s Park’. If an architect or urban designer asked me the same question I would give the same answer. The two most astonishing things about Regent’s Park, for me, are that no urban expansion scheme of the twentieth century equaled its quality – and that Modernist architects wanted to knock down the Nash terraces in the 1950s. The above video shows some of the things I love about Regent’s Park.