Leiston Home High Street Sirapite Long Shop Museum Allotments Grimsey Road in the Snow Leiston Abbey High Street Contact Website Manager Leiston Cinema in the Park 30th August 2014. Fireworks at the end of the evening. Celebrating 100 years of Suffolk’s Oldest Working Purpose Built Cinema. Leiston in the Great War parade. 19th July 2014. Sizewell Road, Leiston.