Would it be ok added to the beds now as I won't be planting until the spring or should I just add it to the compost bin to rot down properly first?
If you were going to use it in a compost heap, you would have to be careful to mix it correctly with other ingredients, but I'll bet it would make a wonderful pep-up for a dormant heap !
Better watch out for hemp seeds...not popular with Mr Plod !

AP, thank you for those tips, that's what I'll do. I don't have a water butt, so TS's idea is...ahem, dead in the water.
Veggie...I have a posh (pink
) camping chair already thank you. Although it would be an appropriate use for couch grass...
Lovely idea, but the cardboard was there for that purpose. After a few months it has just about disintegrated, when I lift it up underneath is bone dry and seems to have invented a time warp that saves weeds from dying. 

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