I thought prospective adopters might be interested in reading the article linked below - it was written last month and is saying that there's currently a surplus of adopters, partly because of a rise in applications and partly because of family court backlogs. It says a lot of agencies aren't taking new applications for single/easier to place children.
I'm a long-time lurker by the way! DH and I have two birth children and have been thinking about adoption for a long time. The time isn't quite right for us to apply just yet though, which is lucky given that we'd most probably only be looking to adopt one child.
www.homeforgood.org.uk/why-the-wait