ConceptA made-up business

Concept note Clo is made up, so this number won't reach anyone. If you're locked out, search for a locksmith near you. If someone is in danger, or a child or pet is locked in a car on a hot day, ring 999.

Clo Locksmiths

Locked out?Most doors open without damage. Ring and we'll tell you if yours will.

Your door, then what's happened.

Pick your front door and what's happened, and you'll see what usually happens next.

A front door at night, lit by a single porch light

Step 1 of 2: your door

Which front door is it?

Every door and situation, written out

  • Locked outFrom £75 (example)
    uPVC or composite
    If you only pulled it shut, usually opened without damage. If it was locked with the key, often still without damage, sometimes the cylinder is replaced.
    Wooden, nightlatch
    Usually opened without damage, often quickly.
    Wooden, mortice
    If it was deadlocked, sometimes picked, sometimes the lock is drilled and replaced.
  • Key snapped in the lockFrom £75 (example)
    uPVC or composite
    The broken piece is drawn out. If the cylinder is damaged, it's replaced.
    Wooden, nightlatch
    Same, then the lock is checked.
    Wooden, mortice
    Same, then the lock is checked.
  • Lost every keyFrom £90 (example)
    uPVC or composite
    Opened if needed, then a new cylinder so the old keys don't work.
    Wooden, nightlatch
    Opened if needed, then a new lock.
    Wooden, mortice
    Opened if needed, then a new lock.
  • Lock stiff or handle floppyFrom £70 (example), multipoint gearbox from £150 (example)
    uPVC or composite
    Usually the gearbox in the multipoint mechanism is wearing out. Don't force it: if it jams locked, you're locked out.
    Wooden, nightlatch
    Usually adjustment or a new lock.
    Wooden, mortice
    Usually adjustment, sometimes a new lock.
  • Just moved inFrom £85 a door (example)
    uPVC or composite
    A new euro cylinder on each door.
    Wooden, nightlatch
    A new nightlatch.
    Wooden, mortice
    A new mortice lock.
  • After a break-inFrom £95 (example)
    uPVC or composite
    If it's happening now, ring 999. Otherwise report it on 101 first and get a crime reference. Then the damaged lock is replaced so the door locks tonight.
    Wooden, nightlatch
    Same.
    Wooden, mortice
    Same.

Concept note Example times and prices for a concept site. A real locksmith would ask a few more questions on the phone.

Is your lock easy to snap?

uPVC and composite doors usually lock with a euro cylinder, the part your key goes into. You can check yours from the doorstep.

Left, from the side: the coral line is how far the cylinder sticks out past the handle plate. Right, the face of the cylinder, where markings are stamped.
  1. Does the cylinder stick out?

    Look at the lock from outside. If the cylinder sticks out past the handle, it's easier to grip and snap.

  2. Look for markings

    Check the face of the cylinder, the end your key goes into, for a kitemark with three stars, or the words "Sold Secure Diamond".

  3. If there's nothing there

    Ask a locksmith about an anti-snap cylinder.

Concept note This is what to look for on any lock. It isn't a claim about the locks Clo fits.

Just moved in?

You don't know who still has a key. Changing the locks means the only keys that work are the ones you're holding.

On a uPVC or composite door, it's usually just the euro cylinder that's changed: the handle and the mechanism stay. On a wooden door, the nightlatch or the mortice lock is replaced. You get the new keys before we leave.

From £85 a door (example)

Services and prices

  • Lockouts

    Getting you back in, without damage wherever the door allows it.

    From £75 (example)

  • Lock changes

    New cylinders, nightlatches and mortice locks, with new keys.

    From £85 a door (example)

  • uPVC and composite door mechanisms

    Stiff handles, floppy handles and worn gearboxes in multipoint locks.

    Multipoint gearbox from £150 (example)

  • Window locks

    Window locks fitted, replaced or freed.

    Example price on the phone

  • Letterbox and door security

    Letterbox guards, door chains and door viewers.

    Example price on the phone

How a call-out works

  1. We ask a few questions on the phone.
  2. You get an example price before we set off.
  3. We open the door.
  4. We ask to see something with your address on it once you're inside.

Areas and hours

Cardiff, Penarth and Dinas Powys.

Every day, 7am to 11pm.

hello@clolocksmiths.example

Book a time

For jobs that can wait, like a lock change or a stiff handle. Tell us about it and we'll ring you back to arrange a time.

Concept note Clo is made up. The form works, so try it: nothing you type leaves your browser.

Which door or window, and what the lock or handle is doing.

Photos (optional, up to 3)

The lock from outside, close up, helps.

In this concept, photos stay on your device. They are only shrunk to show you the preview.

We only use your details to ring you back about this job. In this concept, nothing you type leaves your browser.

Questions

Will you damage my door?

Most front doors open without damage, and we'll tell you on the phone whether yours is likely to. If a lock does have to be drilled, it's replaced so the door locks again before we leave.

Do I need to prove I live here?

Yes. Once you're inside, we ask to see something with your address on it, like a bill or a bank letter. It means we only ever open a door for the person who lives there.

Should I change the locks when I move in?

It's worth it, because you don't know who still has a key. On a uPVC or composite door it's usually just the cylinder that changes. From £85 a door (example).

Clo Locksmiths

Locks opened, changed and fixed in Cardiff, Penarth and Dinas Powys. Every day, 7am to 11pm.

029 2018 0286

hello@clolocksmiths.example

Concept note About this site

Clo Locksmiths is a made-up business. Coreframe Digital designed and built this site as a concept, to show what a locksmith's website can do. The phone number comes from the range Ofcom keeps for fiction, so it cannot ring anyone, and the email address cannot receive mail. There are no real reviews, figures or credentials anywhere on it, and the prices and times are examples.

Photo: front door under a porch light by Erik Mclean on Pexels. Free stock, not Clo's door or work.

© 2026 Coreframe Digital. Clo is fictional.