Yes, Be My Parent and Children Who Wait, especially if you are looking for a toddler/school age child or siblings
Are you on the National Adoption Register yet?
There are exchange days held by authorities (where you go round tables set up by authorities and view and collect children's profiles, talk to the SW's and give out your own flyer if you have one), either regional exchanges or national ones. The Adoption Register has details of the National Exchange days, on their website here ask your SW if you would like to go to one of those days.
You can create your own flyer (one nice looking page with your photo, basic details, basic info about the kind of child you are looking to adopt, and your SW's contact details), and send it to other authorities, and hand it out to the SW's at exchange days (which is useful because I've heard of people not finding their child at an exchange day but their childs SW picking up their flyer and then having them in mind when their child became available for adoption)
Some regions hold adoption parties, where you actually meet the children
Those are the main ways I can think of!