Many WIs belong to the Associated Country Women of the World organization.
The British WI movement was formed in 1915 in Llanfairpwllgwyngyll (Llanfair PG), Anglesey Wales.
Women's Institutes in England, Wales, Jersey, Guernsey and the Isle of Man are affiliated with the National Federation of Women's Institutes.
In Scotland and Northern Ireland there are similar organisations tied to the WI through the Associated Country Women of the World: the Scottish Women's Rural Institutes and the Women's Institutes of Northern Ireland.
Women's Institutes were formed in Scotland and Northern Ireland independently of those in England and Wales.
The first Women's Rural Institute started in Scotland on 26 June 1917, and Madge Watt travelled up from London to speak to a meeting at Longniddry.
In 2010, there are approximately 205,000 members of 6,500 Women's Institutes in England, Wales and the islands, linked through the Associated Country Women of the World to other WIs worldwide.
(In almost a century, Colonel Richard Stapleton-Cotton and his dog Tinker are the only two males ever to be allowed in as fully paid-up WI members.
As of 2013, the Federated Women's Institutes of Ontario (FWIO) had more than 300 branches with more than 4,500 members.Now referred to as Denman, it has grown and developed over the years and is a well-appointed adult education centre attended by approximately 6,000 students each year. The WI Cookery School at Denman offers a range of over 100 day schools, residential courses and family courses. Published eight times a year, WI Life is delivered to more than 220,000 WI members.In 2007, Neal Maidment became the first male editor in the history of WI magazines, which dates back to 1919. Leslie, an amateur musician from Llansantffraid, Shropshire, as an advisor.All this produce was sent to depots to be added to the rations.In 1948 NFWI bought Marcham Park in Berkshire and converted it into a short-stay residential adult education college, called Denman College in honour of Lady Gertrude Denman.