Another issue, beyond what the noble Viscount has said, is that very often there needs to be some limit on when practical completion has been achieved. There are situations where a small firm has been involved at the very beginning of a large project and the larger contractor is arguing that the project has not been completed and is refusing to release the money until a reasonable period down the track of that large project.
I support the noble Lord, Lord Aberdare. As I mentioned at Second Reading, I have an interest in this area, which is on record. The question raised here is a good one and is evidence of the need for proper consideration of the broad range of problems that retentions imply. Certainly, it is well noted that when you have major construction projects, very often the people who are in at the very beginning—for example, those doing the foundations and the steelwork—do not get their payments until the car park is completed. I am not sure whether that would be covered by a completion certificate. Let us face it, the construction industry is not really the most litigious of industries; indeed, people in it often cannot afford to have recourse to the law. Equally, they do not always have very detailed and specific contracts and, as we go down the supply side, the degree of vagueness becomes even more apparent.