Reportedly, 1,300 people joined the party on the day that it opened up membership, which costs £4 per month. In the first financial year, the party raised £512,219 in membership fees. , 65 local and regional Women's Equality Party groups had been founded, and the party reported that it had 65,000 members. The WEP was described as "the fastest growing political force in the UK" in a "Daily Telegraph" article on the party's campaigning for the May 2016 London mayoral election. The party's membership reportedly grew from 25,000 to 55,000 in the month following the European Union membership referendum.