It’s Non-Members’ Varnishing Day today when those who have had work accepted into this year’s Summer Exhibition come to process down Piccadilly, attend a church service in St. James’s if they feel so inclined, eat strawberries and cream, meet friends, and admire the works on display.   This year they are greeted by banners in Piccadilly by Grayson Perry and a huge work by Anish Kapoor in the courtyard like a majestic space station:-