Thomas Cook (TCG) warns of a slow start to its winter booking, triggering a 7% drop in its share price to 144.7p. In contrast, TUI Travel (TT.) advances 2% to 363.4p after increasing full-year underlying operating profit growth guidance. The group is now confident of achieving at least 11% growth on a constant currency basis.Bookmaker Ladbrokes (LAD) falls 9.5% to 170.2p after flagging up further

Difficult trading conditions have forced Czech Republic-based New World Resources (NWR) to abandon its 2013 production targets set less than two months ago. This has spooked investors, causing the coal miner's share price to collapse 10.6% to 167.1p. We have flagged the company's problems several times in Shares, click here and here to read our two stories from February.Department store operator D