FTSE slips though Marks & Spencer, pharma rally lend support

By Kit Rees and Alistair Smout LONDON (Reuters) - Britain's top share index dipped on Thursday, although rises in pharmaceutical stocks and retailers after a well-received update from Marks and Spencer supported UK equities. The FTSE 100 was down 24.74 points, or 0.4 percent, at 6,136.89 points at its close, outperforming the broader European market which extended losses after Wall Street fell. Marks & Spencer rose 3 percent in strong volumes of 228.8 percent of its 90-day average, after it