tonkascat
As the resident cynic (according to Stabilo anyway!) I would want to check out the training facility they go on about on their website. That should give you some idea straight away if there's anything not quite right.
And I see that they don't supply a van within the £17,500 + VAT, they supply one on finance.
So you are going to pay for that. You need to know how much. By the look of the van on their website you could get a nasty surprise when they tell you the cost of the van and your repayment commitments. Bear in mind you'll be driving around advertising THEIR business free of charge, as well as yours! (Can't see why you'd need such a big vehicle either; I would have thought you could get most necessary lockmithing gear in a very large suitcase.)
Your idea of placing a couple of ads locally to see what response you get is very sound. I wouldn't be surprised if the response is minimal.( We don't need locksmiths every week of the year, and most guys are capable of fitting a Yale or Chubb lock themselves; it isn't difficult - even a planning specialist can do it ! I don't know how many people need a locksmith for anything else, but would imagine they're not exactly thick on the ground.)
Their website says make sure you've got 3 months working capital in hand, so they aren't expecting you to get an immediate rush of business. And I would have said you need to assume 12 months before you get into decent profit. (Most new businesses don't make much in their first year. There are possible exceptions, of course - including what I do - but I doubt whether locksmithing is one.)
To be honest, if I was looking to go into a "Van and Man" business, I'd be looking at drains rather than locks. Blocked drains are an immediate distress purchase, and if you've got doo-dah coming up in your bath or sink, you'll happily pay someone to cure the problem quickly. There is usually a hefty callout charge before any work at all is done.
£17,500 + VAT is a hell of a lot to pay to latch onto someone else's business plan and reputation. I would consider very carefully what you're actually getting for it that's of any real lasting value and that you couldn't get yourself elsewhere and cheaper. I'm sure there must be recognised courses in locksmithing run by part-time colleges, and you can use your own van as David Beard says, without handing over £17,500 + VAT.
Since their training facility is in Exeter, I guess they are the Limited company formed last year, LockRite Locksmiths Ltd. (There are 4 companies using "LockRite" in their name, including one in Aldershot and one in Borehamwood, and maybe other businesses that are not incorporated.)
Tread carefully.
AFTERTHOUGHTS : They also offer franchises in Plumbing and in Instrument Making and Repair !
If you do intend to speak to one of their existing franchisees, find one yourself. (I just found one on the Net.) With any franchise-type business, it is a mistake to let them direct you to one THEY want you to talk to, because there is a well known strategy of referring you to a "Singer". (A Singer is someone set up to "sing" the praises of the business you're asking them about. Not saying LockRite would do that, but if you can avoid the risk you might as well do so.)