Seven law firms have made it into the Sunday Times list of the best 100 companies to work for.

Mishcon de Reya (20), Baker & McKenzie (25) and Kingsley Napley (49) were the leading law practices in the mid-sized category.

Lewis Silkin, Mills & Reeve, Withers and Reed Smith also made the list, which is due to be published in full on Sunday.

The rankings are put together by a firm called Best Companies based on surveys of all employees. Key indicators including leadership, wellbeing and personal growth are all factored into the final ratings.

Kevin Gold, managing partner at Mishcon, said flexible working was an important aspect of the firm's success.

‘We work with individuals to find a working pattern which suits their home life, and we do not limit flexible working to those who are eligible under employment law regulations; all staff are encouraged to apply. We do not discriminate against people's reasons for wanting to reduce their hours.

‘We offer the services of an in-house doctor free of charge to all employees, as well as an in-house service of reflexology and sports massage at discounted rates to staff, and our free weekly Yoga and Zumba classes continue to be popular with employees.’

Jemimah Cook, HR director at London-based Kingsley Napley, which made the list for the first time, said the firm has sought to create an open and inclusive culture.

Staff members have access to personal training sessions, yoga and a choir and everyone attends the firm’s annual general meeting.

Cook added: ‘The values of teamwork, respect, integrity and fairness are taken very seriously here and everyone, whatever their role at the firm, is treated equally and has a voice.’

The best mid-sized company was UKRD, while frozen foods retailer Iceland was the highest-ranked big company.