Here is the statement in full from Dianne Hayter, chair of Labour's ruling National Executive Committee, about its refusal to send out nomination forms for the Labour leadership.
The Labour Party National Executive Committee is in agreement that internal procedural debates will not divert the Labour Party from our mission of building a fairer Britain and helping people through these
The NEC fully endorses the view of the Labour Party's general secretary and the party's independent legal advisors.
A leadership election when in government can only be held if requested by a majority of party conference on a card vote, only Labour MPs can trigger the process and the NEC is confident that most MPs know their responsibilities under the rules.
The Labour Party has followed this procedure for 11 years, as long as we have been in government under these present rules, and it has not required the issue of nomination forms at any time.
The NEC has a responsibility to ensure the party follows these long-standing procedures and we will do so. The Labour Party will not waver from its historic responsibilities to our country and to those
in greatest need.