Quote Chris28="Chris28"Well the party that brought it in are hardly going to try to introduce legislation to change it in the same Parliament. Who knows what will happen after the 2015 election though?'"
That is exactly what some on this thread have said would happen in the event of a Yes vote.
Fixed Parliamentary terms cannot be changed under the terms of the Act until looked at by a committee which itself cannot be arranged until June 2020 at the earliest. So we have 2 more GE's before the 2011 Parliament Act can be amended or repealed.
The PM has the power to vary the fixed date by no more than two months, but only if agreed by both Commons & Lords.