Drainage.

I have a chicken run at the back of a barn the barn had a very small bottle gully on it I have had to dig it up as it and the pipe that it was soaking away to was full of silt. I only really found this out when the wife left the tap on and I found the base where my new coop (ok shed) was under water.



I know I will need some sort of gully. In the winter there is a lot of mud (from horses legs) that are washed off every day (plus Wellingtons) that could end up down the drain. 
I have found this one but its

http://www.drainageonline.co.uk/Yard+Gully+.htm
But it is allot of money. £70.52 to get it to me. 

Any ideas?  Or is there a cheaper version. I think I will need something big as there is alot of water that goes down there and I do not want to fill up me soak pipe with silt away again. The pipe lasted 18 months.

I'm currently installing large drainage pipes on 2 sides of my house. I'm using the the 6" variety that you show above and to avoid the silt problem, I'm wrapping them up in clean, old feed bags which will be overlapped and tied at intervals along its length. I can buy pipes with special 'nylon socks' already in place but the price is quadruple what I can afford, so it's feed bags. My other side is rigid pipes with holes predrilled, and these too will be wrapped in poly feed bags (never hessian). An alternative is enviromesh.

try these rough http://www.groundtechuk.co.uk/about.htm they are the cheapest around and not too far from you

Oh yes Shaun Where do you work on with your crew?

I also design other things.

Er Shaun, i don't think i'm allowed to talk to you about work from now on