Two of the three...

...bridges in Berwick.

MrM met me after work this afternoon, as I needed to bring a few things back from the office. (Not another plant, he said in an exasperated tone!) We wanted to go in to Berwick for some shopping, but to avoid the traffic chaos in the centre of the town (they're replacing a gas main along the main street), we parked on the other side of the river and walked in over the Old Bridge. The two bridges are the Royal Tweed Bridge and, beyond it, the Royal Border Bridge.