Biotech specialist Celltech gained 19 3/4p to 406 3/4p as US securities house Lehman Brothers repeated its overweight recommendation and lifted its target from 410p to 500p. EMI rose 6 3/4p to 180 3/4p on claims that Jim Fifield, former chief executive of its music division, has approached private-equity groups, including Permira and BC Partners, about a bid.