The al-fresco Frieze Art Fair, now in its tenth year, is the brainchild of the eponymous London art magazine. It will be setting up its makeshift outdoor gallery in the royal park where visitors can see (and buy) works from over 1,000 different artists from around the world, including British favourite, Grayson Perry. And with the best 170 contemporary galleries from Tokyo to Berlin bringing their best artists with them, you’re in for a real mix of talents and themes.