Bear in mind that the cabinets Tannoy made were smaller, generally speaking, than say, what I made. For example, the Cheviot cabinets they made for my 12" HPD's were 33 1/2" H X 17 1/4" W X 10" D. Also, at less than half the internal volume, at around 65 liters, if I recall correctly. The smaller cabinets won't go as deep in the bass. You also want to remember to keep the tweeter centered at your ear height while sitting, it may involve using stands to get them the correct height.
I urge you to try putting them in an enclosure you can live with, and experiment with different aspects of size, porting, insulation, crossovers, etc. These are wonderful speakers, I'd hate to see you give up on them without at least trying them.
Do as much research as possible, and become familiar with Hans Hilberink's Tannoy website (sorry, I misspelled it before). You've got a great chance of ending up with speakers you can enjoy the rest of your life with.
Best regards,
Dan