By Laura McGuire The employee owned John Lewis Partnership (JLP) will again not pay staff a bonus this year, but has reported a return to profit. The high street heavyweight, which also owns Waitrose and the chain of eponymous department stores, reported profit before tax of £56m, marking a £290m improvement year-on-year. Sales across its entire business climbed by just one per cent to £12.6bn, with supermarket sales leading the growth thanks to efforts to lower prices for customers. Meanwhile, at the ailing department store, John Lewis said its sales were down four per cent to £4.8bn due to w…