The FTSE 100 fell 0.15% to 7,713.71 on Thursday morning, extending its three-day losing streak.
Royal Mail (RMG) declined 1.65% to 459.5p on news its overall revenue grew by 2% in the nine months to 24 December, with parcel revenue up 4% and letters revenue down 3%.
Associated British Food's (ABF) revenues for the 16 weeks to 6 Jan were 4% up on last time at constant currency with sales at Primark up 7%. The shares slipped 0.89% to 2,831.5p.
Whitbread's (WTB) UK like-for-like sales grew by just 0.3% in the third quarter as its Premier Inn hotels and Costa cafes struggled amid tougher market conditions. The shares edged up 0.69% to 3,881.5p.
Halfords Group (HFD) fell 1.42% to 346.8p, despite reporting that it expects full year pre-tax profit to be broadly in line with current market forecasts. Group revenue in the 15 weeks to 12 Jan was up 3.2%, with Retail up 3.3% and Autocentres up 1.9% after record Black Friday and Christmas sales.
Workspace (WKP) slipped 0.28% to 975,35p after reporting a year-on-year fall in average monthly customer enquiries in the third quarter from 1,009 to 858.
Headlam Group (HEAD) said it expects underlying pre-tax profits for the year ended 31 Dec to be comfortably in-line with consensus market forecasts of £42.5m - an uplift of 6.0% on the prior year. The shares slipped 0.18% to 569p.