The Association of Active Shareholders said it had begun a "French-style class action" against EADS over Airbus' delays to its A380 deliveries.
EADS said in mid-June it would deliver only nine aircraft in 2007, and delays would slash pounds 1.1bn from profits to 2010.
The news pushed its shares 26% lower.
CONSTRUCTION giant Balfour Beatty has landed a pounds 32m takeover of rival civil engineering firm Birse.
The two firms agreed a cash offer worth 16.625p a share ( 23% higher than Birse's 13.5p closing price on Friday.
Shares in Birse leapt 19% to 16p yesterday as investors welcomed the news, while shares in Balfour were up just over 1%.
THE UK's richest man hailed a "seminal event" for the steel industry yesterday after his company Mittal Steel agreed a takeover of rival Arcelor worth around pounds 18bn.
Lakshmi Mittal won the backing of the Arcelor board after a five-month battle to merge the world's two largest steel companies and create a powerhouse capable of producing 120m tonnes of steel a year ( 10% of the global market.
CASINO operators Stanley Leisure and London Clubs International (LCI) confirmed yesterday they were in discussions over a possible merger.
The two companies opened talks in the last two weeks over a deal which would create a gaming giant worth around pounds 700m with more than 50 casinos across the UK.