However, the best performing FTSE 100 share of the year was not a bid candidate itself, but a predator. The crown goes to Xstrata, up an incredible 109.5pc in 2006 – well ahead of its blue-chip peers, but a more modest gain compared with Aim-listed engineering services group Redhall, which surged 480pc on bid talk and strong trading. Technically, the Aim laurels go to Netcentric, which soared 880pc to 1.57p after a reverse takeover.