In reply to Philip:
Yeah, I had a Humax You View box for about 18 months but it became unusable so John Lewis today agreed to a replacement Panasonic unit. I can't scroll back in the EPG so can't trigger the Catch Up facility that way. I'll have a more detailed hunt on line tomorrow in case I'm missing something obvious. I did a software update check and had hoped that that might fix it but it didn't.
I must say the user interface of the Humax was much more intuitive than this new Panny. So far I'm not very impressed.