Cartwheel flower

I spotted this flower in the garden on something that looked a bit like a hosta.  I don't know what it is.  I had to stay in the morning to wait for a customer who was coming to collect a clock from a long way away.  He brought another one with him and that kept me busy in the afternoon dismantling and cleaning it.  The freezer had iced up as the door had been left open a crack so I had to do an emergency defrost as quickly as possible before the stack of baskets wrapped in blankets defrosted.  With a fan heater going to speed things up it was unpleasantly hot work.  I am glad I was not in London today with the record temperatures.