Thank you, this afternoon its pretty much back to normal. Still a bit of water in the garden but its much more managable.
The drains are nearly there, things are flowing much more freely.
The dam is in South Yorkshire and I live East Yorkshire (though these days I can never tell, one minute its Humberside, then no one quite knows)
Round here the city council saved £137,000/year about 5 years ago by not doing proper maintenance on the drains in the streets, its what led to some of the problems.