The London equity markets were mixed on Tuesday, with the FTSE 100 falling by 0.3 percent at the close to 5,300.2 even as the FTSE 250 added 0.2 percent to end the session at 7,707.4 on a volume of 2.4 billion shares traded.

British Airways lost 1.6 percent to 285 ¼p as analysts began to assess the damages to the air carrier incurred by the caterer’s walkout at Heathrow airport. One analyst said that BA could have its profits for the year cut by as much as £40 million.

Rolls Royce lost 0.1 percent to 341 ¼p after the announcement that it had won a joint contract worth $2.4 billion in conjunction with General Electric to develop new engines for the joint strike fighter, becoming part of the costliest military project in history.

In the pharmaceuticals sector, Acambis gained 4.1 percent to 255p on the announcement that it has successfully concluded phase II trials on a treatment for Japanese Encephalitis.

In the mining sector, Antofagasta added 1.5 percent to £14.91 on the possibility of more merger and acquisition activity involving the Chilean miner in the wake of the death last week of its former chairman and largest shareholder. Another factor in the company’s advance was the raised interim profits forecasts for 2006, up 43 percent to $341 million due to record copper prices.