If Andy Burnham wanted to signal, clearly, Labour's competence and lack of capture, he'd find a way to abolish the UK's absurd 5 second imposition on every website visitor to satisfy the absurd idea that every person needs to be repetitively interrogated on their preference about cookies. A mild repudiation, and retirement from public influence of the people who thought that they should impose this on the rest of us might also be widely appreciated.
Of course, I'm not British, so my opinion on this should hold no particular weight.