Slaughter and May is moving to new headquarters because the leases on its main City buildings run out in 2002.
Its new office will be a 260,000 sq ft building at 1 Bunhill Row in the City of London, although it is still under construction.
Architects Pringle Brandon will fit out the building from late in the year 2000, and the firm will move at the end of 2001.
Slaughter and May has four London buildings totalling 205,000 sq ft, but the leases on Basinghall Street and Austell House on Basinghall Avenue expire in 2002.
A source at the firm says partners are still deciding whether to keep 4 Coleman Street, which was refitted a couple of years ago and has a lease that runs until “about 2018”, or to relocate everyone to the new site.
The firm's other centre is at 16 Coleman Street. All four offices are close to each other.
A source says: “Three of our buildings are 1960s horrors, but 4 Coleman Street has been recently done out.”
He says the firm is moving to bigger premises because staff numbers are growing.
He says: “The added size will allow us to do all the things we want to do. So far we have had particular groups in particular buildings. It is disjointed as an operation.”