Art overflowing into the streets of Piccadilly, drinks with friends in the Main Galleries, finding the perfect painting and even taking it home — it’s the Summer Exhibition. Run without interruption since 1769, the Summer Exhibition is RA’s annual celebration of art and artists. This year, renowned British painter David Remfry RA takes the reins as exhibition co-ordinator. Remfry’s Summer Exhibition explores the theme Only Connect, taken from the famous quote in…