Unit 2: A different type of economic growth

This interesting post from tutor2u suggests future economic growth in the UK may be based on a different basis to that of the past years

http://www.tutor2u.net/blog/index.php/economics/comments/after-the-storm/

a) Using the AD function, explain the basis of recent UK growth
b) Why is future growth unlikely to follow the same pattern?
c) Explain the likely sources of growth explained in the article