The question the OP asked...
oh and whats the law about the blade on it, as it locks.
The knife is legal, I go through airport security nearly everyday with mine.
It is not legal unless you have a reason to carry it. I'm repeating myself here because just stating that it's legal is actually wrong. If you are an engineer and carry a multi-tool through security, it's probably not an issue for you. That does not justify many other circumstances where you would be in the **** if you were carrying it in a public place.
You will have no problems it's under the legal 3 inch length. Quite a few divers I know use them as well.
You are confusing the sub 3" non-locking legal parameters with the illegal locking issue.
Not a problem than is it. Anyone can think of a reasonable reason to carry one. "its a handy tool to have around in case anything breaks or needs fixing"
Unless you stab someone no one is going to question you having a multi tool.
Not really. You stop off at the pub on the way home, you forget you have your Leatherman on you and there is a bit of aggro, say you get searched. Justify a locking blade to a cop will be an issue. Same if you took it to a footie match, a festival, a school etc. You really have to have a really good reason (work) to have it. Justifying a multi-tool in a club is, again, going to be a real pita. Especially as G.Brown as of January has pushed heavily for prosecution instead of confiscation and a warning.
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According to section 139, subsections 4&5 of The Criminal justice Act 1988....
(4) It shall be a defence for a person charged with an offence under this section to prove that he had good reason or lawful authority for having the article with him in a public place.
(5) Without prejudice to the generality of subsection (4) above, it shall be a defence for a person charged with an offence under this section to prove that he had the article with him—
a. for use at work;
b. for religious reasons; or
c. as part of any national costume.
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Anything outside of those 3 reasons and the onus is totally on you to provide a very good reason. From the Cambridgeshire Constabulary site:
It is illegal to carry any sharp or bladed instrument in a public place (with the exception of a folding pocket knife, which has a blade that is less than 7.62cm or 3 inches). A lock knife is NOT a folding pocket knife and therefore it is illegal to carry these knives regardless of the length of the blade. Possession of a lock knife in a public place without reasonable excuse IS an offence.
Possession of a multi-tool incorporating a prohibited blade/pointed article is capable of being an offence under this section even if there are other tools on the instrument which may be of use to a person in a public place (screwdriver, can opener). It is for the person to prove on the balance of probabilities that he/she had good reason for possession.
The penalty for committing this offence is a minimum six month prison sentence, or maximum of two years and/or a fine.
Even engineers carrying multi-tools have problems...
"A member of OB staff was arrested in Wimbledon for carrying a Leatherman multi-tool in his bag (he was later released without charge). Some Leatherman multi-tools are classed as lock-knives, to which the Criminal Justice Act 1988 applies. Exclusions exist for people carrying such knives for work purposes, religious reasons or as part of a national costume. While the work-related exclusion may apply for most staff, the exclusions are based on a case by case basis, and are not a blanket exclusion.
As such, staff should not carry such tools in public, as “work related purposes” may be hard to justify in a public place e.g. a café or public house."
Hell, you can work for the MoD for 35 years and still get hassled...
http://www.timesonline.co.uk/tol/news/uk/crime/article643848.ece