Colin, I've filled in a number of transfer forms using the method below, and Nominet haven't contacted me yet about not having the domain name on the top of each page.
For those of you who want to print a pre-filled form, do the following:
(1) Goto
http://www.opposite.com/domain_transfer_form.pdf (I've removed the "Get Saveable pdf" button). In Adobe Reader click the "Save a Copy" button to save a copy to your hard drive.
(2) Adobe Reader doesn't allow the saving of changes to form fields, so you need to download a pdf editor. I use Foxit Reader 2.0 for Windows, which works perfectly well. Goto
Foxit Software and download it, then install. When you start the Foxit Reader it might say that there's a "Missing Component Found" just ignore this and click no. Open the domain_transfer_form.pdf and fill in all your details, then click save.
(3) I've found that the Foxit Reader doesn't print the pdf forms that well, so start Adobe Reader and print the form from there. You now have a printed transfer form with all your details already in it.
Note: The next time you sell a domain, all you need to do is use Foxit Reader to just edit the domain name, save it, then print out the pdf form using Adobe Reader. Simple, the whole process takes less than 30 seconds.
Hope that helps.