Last years was just over £700 for me and my wife, but the service was very poor and not proactive in the least, I had to go to them all the time.
I have just changed to a new accountant who is going to charge me £100/quarter. For that he will review all the businesses, profit/loss, margins etc, on a three monthly basis, advise me on the various loopholes and potholes and tell me when I need to spend mone. He is obviously also doing the year end accounts for the different businesses.
He comes with a good track record and recommendations, so hopefully things should get at least better.