Yep, go back to that head-slap moment when chicken biker read this...
What if I chase them as they run off?
This situation is different as you are no longer acting in self-defence and so the same degree of force may not be reasonable. However, you are still allowed to use reasonable force to recover your property and make a citizen's arrest. You should consider your own safety and, for example, whether the police have been called. A rugby tackle or a single blow would probably be reasonable. Acting out of malice and revenge with the intent of inflicting punishment through injury or death would not.
Chasing a fleeing suspect with a weapon and subsequently using it is highly likely to be considered
malice,
revenge, or
retaliation rather than self-defence in legal terms, particularly if the initial threat has passed.
(Source - CPS)
Post #260