*cough* Chamber of the Lords *cough*
The House of Lords does not determine who becomes P.M, cannot dismiss the Government and cannot kill legislation. Even the Commons wants to it can even make it stop any blocking (it can't block "money bills" anyway).
If there is a standoff (like the Anti Terror bill) the Lords is supposed to cave in first.
I think the Lords should have a large elected element, but it doesn't compare with the joke of a system in Zimbabwe... an equivilent to that would be letting the P.M appoint 100 M.P's.