The coming four-day weekend is estimated to boost supermarket sales by 25%. Tesco added 6 1/4p to 258p, as it sold seven tons of Britain's favourite footie-watch food, chicken tikka masala. J Sainsbury rose 7p to 377p. It expects to sell 8m pints of beer over the weekend. Safeway, expecting 'a shopping frenzy', was 3 3/4p better at 304 3/4p.