New York’s Paul Weiss Rifkind Wharton & Garrison and London-based giant Clifford Chance (CC) have sealed their position as major advisers to US investment banks after topping a survey of senior in-house counsel at leading financial institutions.

BTI Consulting quizzed 60 US-based general counsel and business unit heads from the 21 largest investment banks with CC emerging as having the most ‘primary relationships’ over 21 categories.