In the end, it took a total of 5 bags of wood chips to cover all the bare soil in the cage. It was weeded, had manure and/or compost and blood, fish and bone meal applied, raked again, slightly flattened then wood chips applied. Mind you, come a few weeks time, it will be growing that dreadful mare's tail - we don't worry too much as it is near impossible to get rid off and believe me, we have tried!
It looks so much neater:
In the cage we have 2 Blueberries, 2 Gooseberries, 2 tubs Autumn Raspberries, 1 Rhubarb, 1 Blackberry, 1 Loganberry and a Blackcurrant!