Fruit trees are the most attractive espaliers precisely because of their gnarliness—it creates structural interest that the winter garden might otherwise miss sorely:
Above: An espaliered tree in a back corner of designer Neisha Crosland’s London garden. Photograph by Christine Hanway.
Above: An espaliered apple tree (L) and trellised vines in antiques collector Will Fisher’s London garden. Photograph by Christine Hanway.
For more, see DIY: Pruning Fruit Trees in Winter.