Thursday 14 March: We’re in Edinburgh for a couple of days, and this afternoon we’re taking a leisurely stroll around the Royal Botanic Gardens. Not too leisurely – there’s a biting wind. Despite the weather and the season, there’s plenty of colour – rhododendron and azalea are in flower, there are plenty of other spring flowers, and then there are the Tibetan prayer flags… There’s a good view of the Edinburgh skyline too, just a short way to our south.