Thank you for the question. I will give a two-level answer.
The first and very direct one is that following the work we carry out, if an audit of the contract shows that the billing was done inaccurately, we will take action to recoup the money. That's just the way it is. If, for instance, we have paid a consultant for work done, which was asked for and was carried out and we're satisfied with it, but the authority for it was not very clear, we're not going to recoup that money. The work was done and value for the crown was obtained, but the vehicle or instrument was wrong. Then that's our problem and we'll try not to do it again.
When we need to recoup the money on the basis of over-billing or something that was wrong, we will do it. Obviously, if the work was done and things were done correctly, the legal advice we have is that we have no case to go back to it.
The other point I would make is in terms of the performance of companies. We do have a vendor performance policy. The vendor performance policy, which is publicly available, essentially guides us in terms of behaviour. In the same way as contractors are expecting a certain behaviour from public servants, and can expect it and can get it, we are also expecting certain behaviour from contractors, for two reasons: the protection of the crown's interest and, secondly, a level playing field. A contractor should be contracting and behaving correctly vis-à-vis the terms and conditions of a contract and deliver what it ought to be delivering. The vendor performance policy, therefore, allows us to take measures against the company if need be, based on the performance of that company vis-à-vis the contract.