Hi Dave !
Thanks for getting back to me.... we have installed three compost bins and invested in a shredder. We have a couple of different tree surgeons and groundsmen coming to check out our hedges to advise and quote as youre right its just a massive job.
I've made a start on the terraced gardens, pulled out three wheelbarrows of dead old growth and a lot of evening primrose (which the goldfinches just love). There appears to be a lot of bulbs starting to come up, so im going to take it a bit easy when I get the other half cleared this weekend.
Love the cane idea, I have a huge amount of bamboo to clear at the front garden, so I have home made canes on hand for the peas and beans a little later in the year!! 
I guess now is the time to do the before photos....
Thanks for your help.
Marion