In addition the PAB also suggested the release of one character domains and some other short names which are identical to existing generic Top Level Domains (gTLDs).
The Halifax has "if dot com", the pdf appendix 1 suggest "if dot co.uk" could be made available for registration, are they also suggesting "if dot uk" as well for those organisations they deem to qualify?
Appendix 2 lists those two letter names registered before 1996, it's quite interesting to see what pops up on those sites:-)