403 - We have detected a possible security violation caused by your request. Please go back to the previous page and try again. At Setsquare we have been building partnerships with the UK’s foremost highways, construction and civil engineering organisations for over 30 years; delivering world-leading, permanent, temporary, and At Setsquare we have been building partnerships with the UK’s foremost highways, construction and civil engineering organisations for over 30 years; delivering world-leading, permanent, temporary, and contract talent to local markets.