What a lovely place for a stroll. You can swim in the serpentine (you have to pay and there is a designated area and changing rooms) but I was happy enough on dry land admiring the view and watching the ducks, geese and cormorants. It was too early for any one to be hiring a boat or a pedalo but there were plenty of walkers and a group of boot camp fitness folk being put through an arduous looking run followed by press ups etc. One lady was being shouted at by her personal trainer – it’s meant to be encouraging? I would want to shout back but then probably would be so out of breath I wouldn’t be able to get any words out!