"Oh, how very embarrassing!"

That's what the unsuspecting viewer probably said in 1973 when the so-called "large and savage reptile" hoved into view at the top of the Ogron quarry. If only there'd been enough budget to show more than its dangly bits...

But close your eyes for those couple of seconds and Frontier in Space will reward you with many riches.

For where else can you find the third Doctor in hoisty judo slacks, Jo in platform baseball boots and Delgado's Master in a Dracula-collared PVC number with Dalek logo?

And where else could you observe, in one story, twitchy Earth folk, noble Draconians, monumentally thick Ogrons and a stir crazy TARDIS team, who are in and out of prison more often than Mr Mackay?

But does Frontier in Space go where no Drashig has gone before? Or does it outstay its welcome like a Draconian at a UKIP rally?

Listen here to find out what Jim and Martin made of it all.