Professional Legionella Risk Assesment,

Contact us, we are here to help:

Whatever your requirements please don't hesitate to contact us:

By phone:
Office: 01132 760 298
Mobile: 078339 14357 (Karl Collingwood)

By email: General enquiries

By post: Archer + Stone, 11A Lockwood Close, Middleton Grove, Beeston, Leeds, West Yorkshire LS11 5UU

Registered Company (England & Wales). Registered Office: Unit 6, Sugar Mill, Oakhurst Avenue, Leeds LS11 7DF. Registration Number 7050556. Email:

I would like to commend Karl Collingwood –Thirlway as a first class legionella control specilaist. I have known and had work carried out by Karl since 2003 when his legionella risk assessment of a complex site in Halifax was very good. The quality and attention to detail was noticeable throughout the documentation and his approach to the works. I am confident that any Council or other organisation that chooses Archer & Stone (and especially Karl) to do auditing services will be pleased with their decision.

Rob Bottomley, Calderdale Council

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