I would use the Cold Steel Small Sword (rapier), but I am a fencer and very skilled in the use of this type of weapon. If you are not a fencer then you might just want a cut-and-slash blade like the Cold Steel Wakizashi.
To be perfectly candid, in the UK, with the laws the way they are, I would opt for a non-lethal tool such as a Sjambok. I have several and they are extremely effective at de-motivating a would-be attacker. I have used mine on 4 seperate occasions, 3 on humans, and once on a black bear. In all 4 instances, the attacks were immedeatly terminated and the attackers fled rapidly. And no one was killed or seriously hurt (depends on what you call serious....they make nasty whelps). The learning curve is minimal.
To be perfectly candid, in the UK, with the laws the way they are, I would opt for a non-lethal tool such as a Sjambok. I have several and they are extremely effective at de-motivating a would-be attacker. I have used mine on 4 seperate occasions, 3 on humans, and once on a black bear. In all 4 instances, the attacks were immedeatly terminated and the attackers fled rapidly. And no one was killed or seriously hurt (depends on what you call serious....they make nasty whelps). The learning curve is minimal.