Unfortunately the export script from @memetican and others no longer works - it looks like the WF team have changed their front-end framework.
Here’s an updated version. It’s not terribly robust as it assumes WF won’t change things again, but it works for now!
To run, you first need to select the text “301 redirects” on the site settings page (the new framework uses unintelligible class names so it’s hard to identify the table of redirects).