How fast can you arrive in Swansea?

We aim to reach you within 15-30 minutes anywhere in Swansea!

Do you charge a call-out fee?

No, we never charge a call-out fee. You only pay for the locksmith service provided.

Are you available 24/7?

Yes, we’re available 24 hours a day, 7 days a week, including holidays.

Lost or Need a Spare Car Key in Swansea?

We cut and program car keys on-site across Swansea — fully mobile, faster and up to 50% cheaper than dealerships.

📞 Call Now – Car Key Replacement

⭐ Rated 5-Star From 100+ Reviews ✅ No Call-Out Fee 🚀 15-30 Minute Response 👮 DBS Checked

Need a replacement car key in Swansea or surrounding areas? Whether you’ve lost your only key or just need a spare, we provide a fast, affordable mobile service to get you back on the road — with no call-out fees and no dealership wait.

⭐⭐⭐⭐⭐What Our Customers Say

    
 
 
          Sarah osborn 
 
 
 
 Trustindex verifies that the original source of the review is Google. amazing car replacement service in mount pleasant! he kindly came to the house and cut the key on site - all in less than 24hrs!
  
 
         Anders Persson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Marks Locksmith is a credit to the local area. Great price and swift service. Definitely will use again.
  
 
         Chris Price 
 
 
 
 Trustindex verifies that the original source of the review is Google. Car key replacement Killay Swansea. Absolutely brilliant service. Replacement key cut and programmed, even finding a work arounds as problems arose. Could not recommend highly enough
  
 
         Alyson Thomas 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very knowledgeable very quick response recommended him to everyone expert at his job sorted key for car with no problems excellent
  
 
         Tors Bamford 
 
 
 
 Trustindex verifies that the original source of the review is Google. Car key replacement West Cross, Swansea. So I bought myself a new MG6 a few weeks ago and the previous owner said it came with 2 keys… silly me, I didn’t check if the 2nd key worked at the time. Bought the car, took it home then discovered that the spare key didn’t work, so thought I’d change the battery. Took the fob apart and there was nothing inside the fob, it was just an empty shell. So I phoned around, contacted a previous company I had used before, let’s just called them “they done have the keys” they claimed they don’t do them and I need to go to MG for a new key. That’s where Mark comes in, for a very reasonable price, he came down to me in west cross with a new fob for MG6 and programmed the fob. Mark was highly professional and if I ever need a car locksmith again, he will most definitely be my first and only port of call. I highly recommend his services to all. The moral of my rambling story is when you buy a new car always check the spare key before you get home, but if you ever have a problem forget the rest, and just call the best….. which in my opinion is Mark’s locksmith. Thanks again Mark!!
  
 
         Sophie Peffers 
 
 
 
 Trustindex verifies that the original source of the review is Google. Car locksmith in Gower - After closing my boot with my car keys inside, my car decided to deadbolt. I was shortly due to leave a rural campsite in the Gower, Wales, to head back to Oxfordshire. Having found Marks contact details and had gotten in touch, he was with me within the hour, at 10.30pm on a Saturday evening he unlocked my car within minutes, completely saving my bacon. Can't thank Mark enough for saving the day and relieving what was an incredibly stressful situation! I highly recommend having Mark saved in your contacts if you ever find yourself having your car keys locked in your car!
  
 
         Jordan 
 
 
 
 Trustindex verifies that the original source of the review is Google. locked my car keys in boot, mark was out to me within 20 mins and got in to my car in no time highly recommended
  
 
         James Donovan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Car key replacement in neath Would definitely recommend very polite and helpful explained everything what needed doing thank you so much again all the best Also no damage very professional
  
 
         darren williams 
 
 
 
 Trustindex verifies that the original source of the review is Google. Car lockout in skewen swansea. Superb service.  Mark was very helpful . He arrived swiftly and was very knowledgeable and got me in car quickly . Thankyou .
  
 
         Trudy Stephens 
 
 
 
 Trustindex verifies that the original source of the review is Google. Professional and prompt service. Mark was very knowledgable and helpful.  Thank you.
  
 
  
 
  
 
   Google rating score: 5.0 of 5, based on 106 reviews 
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

Our Professional Car Key Services

We provide a complete mobile solution for spare and lost car keys across Swansea. All services are carried out on-site with no need to visit a dealership.

Spare Car Keys

Avoid the stress and expense of losing your only key. A spare key is quick and affordable to cut, while losing all keys can mean costly towing and much higher replacement charges. We cut and program spare car keys on-site, giving you peace of mind and saving you money.

All Keys Lost Replacement

Lost your only car key? We can supply and program a brand-new working key at your location — no towing required. Our prices are up to 50% cheaper than main dealers, and while dealerships often take weeks to deliver a new key, we provide fast same-day service across Swansea.

Remote & Smart Keys

Replacement and programming of remote fobs and smart proximity keys for most major makes and models.

Nissan smart key replacement in Swansea – locksmith holding two new keys

We Cover Most Makes & Models

From lost car keys to spare key cutting and programming, we work with most popular UK vehicle brands:

Ford

Vauxhall

Volkswagen

Nissan

Peugeot

Renault

BMW

Mercedes

Toyota

Citroën

Hyundai

Kia

Why Choose Marks Locksmith?

✔ Local & Independent

Based in Swansea — no national call centres, no middlemen, just a friendly local locksmith.

✔ Lost or Spare Keys

We replace lost car keys and cut/program spare keys for most makes and models.

✔ Mobile, On-Site Service

We come to you — no need to tow your car or visit a dealer. Fast & convenient.

✔ Transparent, Fair Pricing

No hidden fees, no call-out charges — just honest pricing for professional car key services.

Spare Vauxhall Vivaro key being cut and programmed in Swansea

Areas We Cover

We provide mobile car key cutting and programming services across Swansea and surrounding areas, including:

Frequently Asked Questions

❓ Can you replace my car key if I’ve lost all of them?

Yes — we specialise in all-keys-lost situations. We supply and program a new working key at your location. Our service is up to 50% cheaper than main dealers, and unlike dealers who can take weeks, we provide a much faster mobile solution.

❓ Do you cut and program spare car keys?

Absolutely. Having a spare key avoids the risk and cost of losing your only one. A spare is affordable and quick to provide, while replacing all keys can involve towing and much higher charges. We cut and program spares on-site across Swansea.

❓ How long does the service take?

Most spare keys are supplied within 30–60 minutes on-site. Lost key replacements may take longer depending on the vehicle, but we’re still far quicker than dealer lead times, which often stretch into weeks.

❓ Do I need to bring my vehicle to you?

No — we are a fully mobile locksmith service. We come to your home, workplace, or roadside anywhere in Swansea and surrounding areas. No towing, no extra hassle.

❓ Which vehicles can you provide keys for?

We cover most popular UK makes and models, including Ford, Vauxhall, Volkswagen, Nissan, Peugeot, Renault, BMW, Mercedes, Toyota, Citroën, Hyundai, and Kia. Call or message us on Whatsapp to confirm your vehicle.

❓ What are your prices?

Our prices are up to 50% cheaper than dealerships. Call or message us on Whatsapp for an instant quote based on your vehicle.

Need a New or Spare Car Key? Call Now

We come to you — fully mobile service across Swansea. No dealership delays, no call-out fees.

📞 Call Now for Fast Mobile Key Replacement

📞 Call Now – Mobile Car Key Replacement