Hello, and welcome.
Please take a moment to fill in your profile so people can tell where you are located. Either “Location” or “National Flag” will give other users an idea of where you are located, so that when you ask questions about parts sources they can tell where you are located. See the user guide: How do I: Access my user profile?
As you are based Sheffield UK (I can see where you are because I’m a moderator), Burlen would be one local supplier for your carb bits. I’m not sure about local scrappies, but I’m sure someone from your area will chip in.