If you would like to see details of this project, before and after there are two articles in the Barbel Society magazine Barbel Fisher.
I'm not going to put a direct link, but when you have finished your current viewing of this site forum, why not pop over to the Barbel Society website.
On the front page, on the left hand side close to the bottom,there is a section marked Barbel Fisher, click on that and find editions 30 & 31. There is an article in each labelled Arborfield Restoration.
Any problems finding this PM me and I'll send you the direct link.
A non-commercial venture partially funded by Society members, through it's Research and Conservation Fund.