We only started getting the Abs Radio 70 problem after the dealer did a system upgrade.
It is a software problem where the radio cant distinguish which dab region its in so it tunes to rubbish-
Sure fire fix is tune to internet radio on your phone and connect via bluetooth
I Have had exactly the same Absoluteradio 70s problem in th london area - as soon as you are 30 miles outside london the radios is fine. Where is the Dab-dab link setting>