To be honest, for your size room I don't think either one is optimal.
The Tannoy is obviously too big for your room.
Everything I've read about the Ocellia suggests they need adequete "room to breathe". If you look at some of the pictures of people that have deployed them (especially Ocellia's own listening room), it seems to support this. They are semi open baffle, which means that room interactions are probably going to play a more critical role in the sound than usual, so you'll need the space to be able to move them around until they are "tuned" properly to your room.
Rear ported speakers like AN-E would probably be perfect because they require corner loading and these happen to be small also. Back loaded folding horns would be a good choice also for the same reason; although they'll be bigger than AN-Es. Other horn designs like the labrinth loaded Rethm (shameless plug I know as I'm selling a pair) would also work better than your choices in terms of size occupied, positioning, and ultimately sound quality all IMHO.
The Tannoy is obviously too big for your room.
Everything I've read about the Ocellia suggests they need adequete "room to breathe". If you look at some of the pictures of people that have deployed them (especially Ocellia's own listening room), it seems to support this. They are semi open baffle, which means that room interactions are probably going to play a more critical role in the sound than usual, so you'll need the space to be able to move them around until they are "tuned" properly to your room.
Rear ported speakers like AN-E would probably be perfect because they require corner loading and these happen to be small also. Back loaded folding horns would be a good choice also for the same reason; although they'll be bigger than AN-Es. Other horn designs like the labrinth loaded Rethm (shameless plug I know as I'm selling a pair) would also work better than your choices in terms of size occupied, positioning, and ultimately sound quality all IMHO.