Getting to the root of the problem has been the drain specialists task for most of 2011. Yesterday they decided that a hole needed to be dug in the garden to discover why the rainwater does not flow away and a lake forms at the front door.
As they dug deeper they discovered that there was no drain, just a pipe going nowhere. It looks as though the builders had ran out of time to finish the job and simply buried all the stuff needed to build a drain down a deep hole.
There were sacks of unopened gravel, brick and breeze blocks all discovered yesterday. Today the digging and drain search continues. It's all very exciting.
I hope the rain holds off!