Oil firms, drug makers lift FTSE 100 to gain By: MarketWatch April 03, 2012 at 05:07 AM EDT The U.K. stock market rises slightly on Tuesday as oil firms and drug makers gain, while Compass Group declines after a broker downgrade. Read More >> Related Stocks: Amgen Astrazeneca Plc ADR Bhp Billiton Ltd ADR Gsk Plc ADR Royal Dutch Shell Cl B ADR Royal Dutch Shell Plc ADR