No doubt someone will explain what they do in the case of 08L/26R Gatwick which is a taxiway most of the time and a runway some of the time.
No, 08L/26R is a runway.
Granted, it is mostly used by aircraft taxying rather than taking off and landing, but it is a runway nonetheless.
Oh, and bear in mind that Annex 14 is not a standards document in the UK, won't you?