Thomas Armstrong - Divisions


Stocks Bros. Limited

Stocks Bros. Limited

In March 2007, Stocks Brothers Limited became part of the Thomas Armstrong group.

Stocks Brothers (aka Stocks Blocks) was founded in the 1920’s at a small site producing aggregate blocks with a hand mould. Growth was rapid and today at their large site in Garforth, Leeds Stocks Blocks Ltd are producing over 100,000 lightweight aggregate and masonry blocks daily from one of the most technically advanced manufacturing plants in Europe.

In addition to satisfying the spiralling demand for blocks of consistently high quality, Stocks innovative policies have resulted in products that have extended both technical and aesthetic properties. These outstanding products are now helping to create imaginative and practical new constructions that hitherto would not have been possible.

Stringent quality control procedures together with fully automated production processes maintains high product standards to satisfy the requirements for Architects. Builders and local Authorities. We also operate a special category quality control system.

In addtion to our long-standing quality assurance certification to EN ISO 9001:2008, in May 2011 we achieved full certification to the prestigious international standard for Environmental Management EN ISO 14001:2004.

We are ISO 9001:2008 BSI Certified; Cert No. FM01773We are EN ISO 14001:2004 certified; Cert No. 11/E007

For futher details of products and services, please visit the Stocks Blocks Ltd website at:

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