From swim spots and pick-you-own sunflowers farms to hotels with unbeatable views, Rosie Paterson tells you how to make the most of London while the sun is still shining and where to stay
Where to stay
Until the end of August, guests at Treehouse Hotel London — surely one of the capital’s most underrated hotels? — will receive a pair of wellies, umbrella, Cath Kidston pomegranate-print tote and picnic blanket, Sipsmith gin and tonics and enamelware cups. All…