T. Clarke, the building services company, says its forward order book has improved and now stands at £190m with over 50% of this year's requirement secured.It says it has won several high profile contracts including the famous "walkie-talkie" at 20, Fenchurch Street in the City. The total area amounts to 686,670 sq feet including 22,950 sq ft of retail space.At nearby London Bridge T. Clarke has also been taken on to look after the 428,000 sq ft of office space at The Place.The news saw the stock rise 15% by 10:51 this morning, although over the last 12 months T. Clarke's shares are down 66%.Yesterday analysts at Panmure Gordon said the company needed to show progress in generating cash for its dividend. The encouraging news on orders may imply T. Clarke will be able to provide shareholders with a reasonable return come the official year end release on the 20th of March.BS