Back to rankings
England - London • Corporate and commercial
5

Financial services: contentious

Constantine Law Limited logo

Constantine Law Limited

More information
Constantine Law Limited boasts a particular strength in handling internal investigations and disciplinary proceedings involving both FCA and PRA exposure and non-financial misconduct, regularly working closely with the firm's employment law team. The group is led by Sarah Wallace, a ‘brilliant strategist and excellent all-around lawyer’ who works with various senior executives and firms involved in FCA, SFO, and DOJ investigations. Wallace is especially noted for her defence-side work in complex enforcement actions, including LIBOR and insider dealing cases. The team was strengthened by the arrival of John Milner in March 2025.
Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘A boutique firm with excellent expertise in Financial Services.’

  • ‘Sarah Wallace is a brilliant strategist and excellent all-around lawyer who really fights for her clients.’

  • ‘Sarah Wallace has experience on both sides of the fence, being a former regulator. She is very much someone you want on your side in contentious regulatory matters.’

  • ‘Sarah Wallace is my go-to peer when it comes to contentious FS matters. She is highly experienced and fights for her clients to get the right outcome for them. I have no hesitation in recommending Sarah when it comes to referrals, and she is at the top of my list when I think of ILAs.’

  • ‘Sarah Wallace is very experienced and has seen it all.’

  • ‘Sarah Wallace is a very safe pair of hands.’

Practice head

Sarah Wallace

Other key lawyers

John Milner