Irritating Click on DAB radio

[russian rocket]

got me T2 back from it's first service.

Still has an irritating "click" which comes over the DAB radio when I put my foot on brake, had asked for this to be fixed. not on CD or the analogue radio.

Any obvious things to consider before sending it back?

[SlowRider]

It might be worth moving the DAB aerial, just a guess.