It's not timely, but the photo is too good to waste. Sir Roy Strong is a long-time dandy whose 6x3 double breasted suit, tailored by Blades in 1968, is displayed in the UK's Fashion Museum (he's also a writer, broadcaster, historian, diarist and gardener, former director of The National Portrait Gallery and the Victoria & Albert Museum, and High Bailiff of Westminster Abbey).
In the picture, Strong is dressed for gardening supervision in a double breasted cotton suit and ventilated shoes. It's hard to recommend cotton suits for anything other than July afternoons in the garden - linen is usually a better choice. But Strong definitely looks seasonally appropriate even though none of his clothes are to my taste. Well, maybe the hat.