Gay rights charity Stonewall has published its Top 100 Employers for 2013, with management consultancy firm Accenture topping the list.

In second place is Gentoo and the Co-operative comes third.

This is the first year that a mutual retailer has entered the top 10 and Gentoo has reached the highest ever position for a housing employer.

There was also strong performance from MI5, who climbed into the Top 30 having debuted on the list at 62 in 2012. And London Ambulance NHS Trust climbs over 70 positions to 22.

Goldman Sachs wins the award for Employee Network Group of the Year and Nationwide is named Most Improved Employer. Chief Constable Alex Marshall from Hampshire Constabulary is named Individual Champion of the Year.

Full results of the 2013 Stonewall Top Employers list will be announced at a ceremony held tonight in London.

Stonewall Chief Executive Ben Summerskill said. “Every employer in the Top 100 has performed impressively. These results are significant as it’s just ten years since we won vital legal protections for gay people in the workplace. Britain’s 1.7 million gay staff and 150,000 gay university students can now confidently use the Index to select a welcoming employer, or look further, safe in the knowledge that they are protected from discrimination.”

Olly Benzecry, senior managing director of Accenture in the UK and Ireland, said: ‘We’re absolutely delighted to receive this recognition from Stonewall. It is a huge credit to our LGBT network. One reason Accenture is a successful business is because of the individuals and groups who make it a great place for people to work and perform at their best.”