Oh, and p.s., if we're talking about moving the goalposts how about Labour moving from a left wing to left of centre party to a right of centre New Labour.
I hardly think that's exclusive to Labour, do you?
Labour first figured out that in UK politics if you are as close to the middle ground as possible, then you've got a good chance of winning, especially when you're in opposition - all you need to do is wait for the govt to f*** up. Step forward Tony Blair and David Cameron.
This is exactly the reason why Blair led 'New Labour', not Gordon Brown and why Cameron is now leading the Tories.
In terms of terms served though, I wouldn't call Labours massively disappointing. As has been stated, they fixed a lot of the 'common mans' services that the Tories utterly destroyed. This takes money to do.
The main let downs with Labour were the lack of financial regulations which means things are a lot tougher now after the GFC (having said that, you could argue that London wouldn't be the financial capital of the world if they hadn't done this) and the Gulf War.
At the moment the Tories are like kids in a sweet shop, they have one of the greatest excuses ever to cut public services and give the money to their mates in big corporations.