Posted: 31/01/2014 at 14:56
Digging in compost now would be best. I know it will be hard work, but now is the best time as the rotting process needs to get underway asap.
We really need a distinct cold period with plenty of frost, as this will help break up the clay, but adding manure opens up the clay particles, which when we do get a cold period, will allow the frost in which speeds the break up.
There is no easy solution, just hard work, and a prayer for less rain.