Len Richards has recently celebrated his first anniversary as the Chief Executive of Cardiff and Vale UHB. While this week he’s been taking stock and reflecting on his first year in post, doubtless he has one eye on the coming week as his Offa’s Dyke Challenge looms. In January, he announced that he will be walking the entire 177 miles of the Offa’s Dyke path over the course of 10 days for charity. Now, that time has come as he…