Rogue locksmiths use predictable tactics to overcharge. These 7 questions — asked before any work starts — separate a legitimate Dulwich locksmith from one who will triple the price once they are on-site.
Why Choosing the Wrong Locksmith Costs More Than the Job
Rogue locksmiths are a documented problem across London. The pattern is consistent: advertise a low call-out price, attend promptly, claim the lock cannot be picked and must be drilled, then charge £300–£500 for work a legitimate locksmith would do for £75–£100.
Knowing what to ask beforehand is the most reliable protection.
1. Are You Insured?
Any professional locksmith carries public liability insurance — typically £1–2 million. Ask directly before they start. A legitimate tradesperson answers immediately. Hesitation is a red flag. TrustLock carries £2 million public liability insurance on every job.
2. Will You Give Me a Fixed Price Before Starting?
Fixed pricing before commencement is the single most important protection against overcharging. Get a confirmed price over the phone. If a locksmith will not commit until they have assessed the situation in person, they may be planning to escalate it.
3. Can You Open the Door Without Drilling?
A professional locksmith can open most standard residential locks non-destructively by picking, manipulation or a specialist bypass tool. If your locksmith immediately reaches for a drill, ask why a non-destructive method is not possible. In the majority of standard lockout cases, it is.
4. Can I Check Your Google Reviews?
Look for 200+ verified Google reviews mentioning specific work (lockouts, cylinder changes, UPVC repairs) rather than a handful of vague five-stars. A local business with a genuine track record will have detailed, specific reviews.
5. Will You Provide an Invoice?
A professional provides an itemised invoice as standard — essential for insurance claims and warranty purposes. An unwillingness to provide one is a serious red flag.
6. What Brand of Parts Do You Fit?
If new locks are needed, ask the brand. Reputable locksmiths use Ultion, Yale, ERA, ABS or Mul-T-Lock. A vague answer may indicate cheap unbranded parts sold at premium prices.
7. Are You Locally Based?
A locksmith with a verifiable local address is less likely to disappear if something goes wrong. TrustLock is based at 46 Grove Vale, SE22 8DY and has served Dulwich and South London since 2014 — over 5,000 jobs completed.
Quick Red Flags
Call 07984 547185 for a fixed-price locksmith quote in Dulwich or South London.