I have a cunning plan.
Let's demolish the Houses of Parliament.
http://www.bbc.co.uk/news/uk-politics-33184160£5.7 Billion to repair it. No thanks.
Demolish it.
Build a smaller (much smaller) building to house the ELECTED members of parliament.
Disband the Lords (saving several hundred other millions)
Sell of a huge swathe of property in a highly desirable riverside location for Billions more.
Perhaps they could then modify the changes to Tax Credit cuts (modification is still necessary).
Win Win!