When you're a Doctor Who fan, you're going to be a completist in some way.

You'll want every Target novelisation, BBC Video, blu-ray, action figure, New Adventures, whatever it maybe.

This week, the Radio Times released six different covers to mark 20 years of New Who, featuring the 21st century Doctors. Dave and Kenny both wanted particular covers, so we join them pounding the streets of Glasgow at night on their quest.

Will they succeed? Tune in and listen! The Quest is the Quest!