For public sector clients there are limits set out in the Public Contracts Regulations 2015 and it's possible that the source of this suggestion is basing the assertion on Regulation 72(1)(c)(iii) from which it could be inferred that the contract would need to be re-tendered. However, I think this would only be the case, as Rob suggests, if there was a single change that was more than 50% of the contract value - it would probably be worth reading Regulation 72 (or getting legal advice on it) if you are a public sector client.
↧