Welcome to Pyramid Display Materials Pyramid started trading in 2002 and we have constantly developed and refined our product portfolio to grow in tandem with the huge evolutions we have seen in the sign and display industry. We have strived to do more than simply keep pace with technological and environmental innovations and have grown to become the UK’s largest and leading sign and display supplier. On October 1st 2021 Pyramid became part of the Grimco family of companies.