US investment bank Lehman Brothers has extended its main UK legal roster, adding top 10 City firm Simmons & Simmons to its list of preferred advisers.

Simmons, which has been doing an increasing amount of work for the bank over the last 12 months, joins Lehman’s established UK advisers – Linklaters, Allen & Overy, Ashurst, Lovells, Freshfields Bruckhaus Deringer and Weil Gotshal & Manges – following a review that also saw the bank crack down on fee arrangements with outside counsel.