Apologies if this has been asked elsewhere, but is there a way of being able to get previous episodes of programmes on BBC Iplayer through a Roku device?

An example is the programme called Click. Through the Roku, it appears only th latest version is available, bnut if you access BBC Iplayer through a Sky box, you can see a lot more episodes.

Try the search function in iPlayer.
Type in click and you should see the last 54 episodes...

Excellent. I have just tried it and indeed they are there.

Thank you very much.