Where can I buy tomato ‘Oh Happy Day’ , which I saw at Chelsea Flower Show?

Jean SharPLeS, hertfordShire

AFeaturing superb blight resistance, tomato ‘Oh Happy Day’ is a cordon type that produces clusters of round, 150g tomatoes. It’s ideal for containers, planters or a sunny spot in the garden, available from Thompson & Morgan, £2.99 for eight seeds. Call 0844 573 1818; www.thompson-morgan.com