Barlow Lyde & Gilbert LLP (informally BLG) was an international law firm headquartered in London, United Kingdom which specialised in commercial litigation, dispute resolution, insurance and reinsurance.

[4][5] On 1 May 2007, the practice of BLG in London and Singapore transferred to Barlow Lyde & Gilbert LLP, a limited liability partnership.

In September 2007 a three-partner team led by commercial litigation head Clare Canning defected from BLG to U.S.-based law firm Mayer Brown.

[7] In July 2008 BLG were appointed as solicitors to the inquest into the death of Jean Charles de Menezes, a Brazilian accidentally shot dead by London police.

[9] In July 2010 BLG acquired the Manchester-based insurance business of failed law firm Halliwells, comprising a 17-partner team and an additional 220 members of staff including 80 fee-earners.