Should I cut my Autumn Bliss raspberries down to the ground now?

[punkinpie]

Seems about the right time to me??

unless you want to try double cropping? (about halfway down the page in the link)

Mine have only just started really cropping, are they late? Still plenty of flowers and fruits on it.

I cut my Autumn Raspberries right down to a couple of inches in feb, seems to work!

Yes

Anytime from now (if you are not harvesting anymore) through to February.