Guardian: Stout shoes, fleeces and anoraks used to be the unofficial uniform of most National Trust members. Now lovers of the countryside and stately homes can get hold of the real thing: official National Trust walking boots. The brown leather boots, tastefully adorned with the trust’s oak leaf symbol, are now in offer in trust shops alongside more traditional offerings such as pot pourri and pewter ornaments. The not-altogether memorably named Altitude IV WPi NT Enviro is the first …