WHSmith has been dependent on its growing travel division to offset a long-term sales decline across the high street, where annual revenues are now little over half 2010 levels. As its latest results show, the travel division is growing rapidly, but after years of cost-cutting its high street estate is now in dire need of investment. Our Retail Week analysts examine WHSmith’s performance and priorities for both divisions as the retailer continues to invest in one and cut costs in the other