He's achieved little to nothing.
Not sure about that. He's made himself front page news for several consecutive days despite being a backbench mp during a parliamentary recess. Whatever the outcome, to many people he'll come out of this looking like a victim being oppressed for 'telling it like it is'/'saying what we're all thinking' thus increasing his support/popularity among said people.
In terms of his usual aims he's achieving exactly what he set out to do.