During a visit down to my parents in Staffordshire, we lucked out to have one day of sunshine during a week that had been otherwise blighted by rain. So instead of staying in, we decided to pack up and head across to Trentham Gardens which sits on the outskirts of Stoke on Trent. It’s a place I visited as a child, not that I can remember it in all truth. We tend to go and wander around the chalet-style gift shops or mooch in the huge garden centre, but since they started charging to visit the estate it was something we never bothered with. I was put off by the…