Tammag Sign Services Tammag Sign Services are based in the North West of England and provide a quality project management, sign survey, and sales consultancy service throughout the UK. Sign Installation Contained within our substantial portfolio of sub contractors are over 50 installation crews all fully certificated and trained in all aspects of modern sign installation. We also have a number of qualified electricians who can supply and install all contract wiring relating to the signage and illumination prior to the installation date. We have surveyors based in all regions of the UK who are able to survey and deliver quickly and accurately at short notice.