I spoke to Robin Bull's wife on Friday to find out how his recovery is going and she said that his initial operation went well but since then he has had an irregular heat beat which they have attempted to correct. This hasn't been completely successful as he now has some fluid around the heart as well, I think she said that it was that either today or tomorrow that they were going to try a procedure to clear the fluid.
He is still in the Hammersmith hospital and she obviously doesn't know at the moment when he will be out as he has also lost some weight which isn't ideal in his present condition.