Countries with successful PPP markets have at least one of three common characteristics:
■ Political will to develop PPP models
■ A degree of fiscal constraint that reinforces the need for a value for money approach
■ The right legal and institutional framework on which to build a range of PPP models.
The importance of each of these factors in driving forward PPPs will differ from country to country, but without them it is hard to promote successfully the PPP models now used in the UK and many other countries.