No, I think day tickets can fish the short stretch downstream of the bridge at Summerbridge. However, I am not sure day tickets are on sale at the moment because of disease or whether out of season.
Anyway Articfox, you sound like a nimble chap, so next year you can either jump down next to the bridge on the south east side and fish down, or walk down behind the tenis courts and pavillion on the south bank and drop down the steep bank and fish up. Either way you should take a wading stick as the bottom is trickey with quite a few large rocks that tip up. Well worth the effort though on a £5 day ticket.
I also recommend you try upstream of Pately Bridge as well, towards the top of the day ticket stretch. The river is much easier to access and kinder under foot.