Rank Group, the British bingo hall and casino operator, has this morning revealed an increase in first-half pre-tax profit as its Grosvenor Casinos and Mecca Bingo halls attracted more customers. The company, which operates 35 casinos and 103 bingo halls in Britain, made a pre-tax profit of £25.1m – up from £24.7m the year before. Overall customer numbers increased by 11.9% to more than 2.5 million during the period, with average spend per visit rising by 1.5% to £22.48. Rank said it would pay an interim dividend of 0.74 pence per share, having not paid one at this stage last year because of tough trading conditions