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Digital Markets, Competition and Consumers Bill

I am grateful for what my hon. Friend has said so far about the application of the proportionality test, but if he is to follow up with Members in writing with some clarity, can he set out what he believes the grounds for challenge would be on the basis of proportionality? The interventions that the CMA may make and the rulings it may give are at the end of quite a lengthy process of market analysis, demonstration of abuse of market power and breach of conduct requirements. If those are challenged routinely and at a late stage, on the basis that there are grounds to say that it is disproportionate, it could have the unintended consequence of delaying systems in a way that they should not be delayed.