St. James's Place, Barratt Developments to join FTSE 100
* St. James's Place, Barratt to join FTSE 100 * Tate & Lyle, Amec to slip to FTSE 250 index * FTSE quarterly rebalance effective from March 24 By Atul Prakash LONDON, March 5 (Reuters) - Wealth manager St. James's Place and housebuilder Barratt Developments will be promot
