Product testing and accreditation


The Fullstop Security range is tested to the highest international standards to ensure maximum protection and reliability. Development begins with rigorous in-house testing, followed by independent certification from Sold Secure, where products have achieved the prestigious Gold rating.

Further validation comes from UK automotive security experts Thatcham, with our highest-security products also tested by Dutch laboratory Kiwa SCM.

Selected Fullstop products are also accredited by Secured by Design (SBD), the UK’s official police-backed security initiative, reinforcing their trusted performance and real-world theft protection.

2002
New blood enters the market

Purple Line Limited enter the market selling camping accessories and develop their first product the Hitchdrive

2003
First Fullstop products come to market

On the back of massive success from the Hitchdrive and upon a new distribution partnership with Unipart, Purple Line design and develop their first Fullstop products. They included hitch locks and wheel clamps along with a security hitch post.

2006
First products get the gold
fullstop sold secure approved

The Saracen Ultra hitch lock along with the Centuriuan, Highlander and Fortress gain Sold Secure Gold approval.

 

The entire Fullstop range gets Sold Secure approval
fullstop_sold_secure_06

With the initial products already approved, the Samurai and Nemesis Wheel Clamp both gain Sold Secure Gold rating for caravans

2008
Excalibur enters the market

Alongside our range of wheel clamps, we introduce our first wheel lock device

2012
Gap in the market for Ultra fast fitting high security
register your nemesis ultra caravan wheel lock

Purple Line design and develop the Nemesis Ultra. The fast fitting wheel lock changes the way caravans are secured being able to secure a caravan with one hand in under ten seconds

Exceeding UK testing to international standards
Exceeding UK testing to international standards

TNO homologations approve the Nemesis Ultra with the SCM MP-03 directive. A comprehensive laboratory test conducted by a international company, Fullstop products level up their test procedures

2013
Final Sold Secure approval

The Nemesis Ultra is the last product to get a Sold Secure approval. Fullstop products continue to expand into new markets in Europe, Australia and America as international product testing begins to be rolled out

2015
A new era for UK approvals
A new era for UK approvals

With the opportunity to combine with a market leading research company know for their development in automotive security. An agreement is struck with Thatcham for the Nemesis Ultra to sport their highest category 3 approval thanks to it’s dual layered hardened steel design and pick, freeze and punch resistant British made lock

2023
Kiwa SCM ticks all of the boxes
scm caravan security approval

Fullstop products continue to be tested to the highest international standards by Kiwas test labs in the Netherlands. The Nemesis Ultra and Plus wheel locks along with the Gullwing and Winterhoff lead the market with their unrivalled levels of leisure vehicle protection

2026
Purple Line becomes Secured by Design (SBD) member

Purple Line Ltd became a Secured by Design (SBD) member, reinforcing its position as a leader in caravan, trailer and motorhome security. The police-backed accreditation recognises the strength and reliability of the Fullstop Security range, including the Excalibur wheel lock, Nemesis Plus, Nemesis Ultra and Saracen Gullwing hitch lock, all of which have undergone rigorous independent testing to meet strict police-approved standards. Designed to deliver maximum protection without compromising ease of use.


Unsure about the product you need?


Give our UK sales team a call today to discuss your security needs

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