All you are going to see from 2013-2015 is a rise in house prices as all the folks who can't be bothered to save a deposit or have poorly paid jobs can suddenly buy again using the HTB scheme.
So the floodgates are once again open again, we'll that is if any body passes the stringent credit tests, I hear zero hour contracts are a strict no no!
After 2015 and presuming that HTB doesn't continue then I expect another decrease that will more than wipe out any 2013-15 gans.
The current government have obviously made it there business to keep house prices high until then.
After 2015 I fully expect IR to creep up as well so this will add further pressure to HPs.
I'm 34 and from the midlands and most of my friends not earn about £22,000 a year and they are already struggling so god knows what will happen when IRs go up, I guess we will see a massive crease in repos again.