That wingman is pretty neat but not a chance i would pay that kind of money for that.
panniers are a great shout and sensible option and I was aware of them but not a chance i would fit them to my bikes. unless i was camping. Im far to cool for panniers lol. Will save them for when im 60 haha.
I still have not purchased a rucksack but as mentioned from another poster i have left gym shoes and office boy shoes at both places of work now which lightens the load massively.
I also use a microfibre towel which is brilliant and folds into the size of a postage stamp!!!
i am still on the lookout for a decent backpack and i think the karrimor urban or
regatta survivor II should fit the bill.
roll on the dark nights and the cold weather ey. I love winter commuting
thanks for all the great replies everyone!!