Disability is one of the most overlooked diversity metrics in the legal industry. But that could be set to change as the proportion of disabled people in the trainee ranks stands at over 20% at some of the largest law firms, according to research by Law.com International.

The survey, which canvassed 68 of London’s largest U.K. and U.S. firm’s, asked about the proportion of disabled people in the partnership, among newly qualified lawyers with two and three years post-qualification experience, and at trainee level.