About Label Lock™

About Label LockLabel Lock™ is the product brand and registered trademark of Security Labels International, part of the Mercian Labels Group based in Staffordshire, UK.

Experience matters

With over 45 years experience in the design and manufacturing of tamper evident security sealing products, we manufacture at 2 sites in the UK and benefit from over 9,000 business and government customers, exporting tamper evident products to  countries across 6 continents.

Our clients include law enforcement bodies, airlines, government agencies, security services, logistics and transport businesses worldwide. Label Lock™ products have been used to secure the safety of events from political conferences, national elections and Papal visits to sealing gemstones, cash, examination papers and pharmaceuticals in transit.

Geoffrey Waldymeyer Associates was acquired by Security Labels International on 23 April 2012 and has upgraded its product range to sell Label Lock.

We are experts in tamper evidence.


We conduct significant innovative research to develop new products and technologies in tamper evidence. Our employees include scientists, engineers, printers, coating specialists and software engineers, who work together project specific teams to tackle tamper evident challenges. We combine our own resources with those from our supplier partners to develop innovative products that perform. Innovation is key to our success and we are always looking for new projects and partners to develop new tamper proof products and solutions with.  If you have a particular tamper evident sealing challenge you wish us to review free of charge then please email the details to hugo.gell@labellock.com .

In 2014 we became the first manufacturer to accredit the manufacture of tamper evident labels and tapes to ISO17712:2013, the new global standard for security seals.


All Label Lock products are manufactured and supplied under the highest of quality control procedures including UKAS accredited  ISO 9001:2008 certification to manufacture tamper evident packaging.  We are accredited to ISO 17712:2013 and sell C-TPAT compliant products.  Read more about our accreditations here.