A 23-foot-high concrete noise barrier at Heathrow Airport received a 1985 Commendation of The Concrete Society, England for "...an unusual but highly appropriate application of the use of concrete to fulfill an entirely technical function."

It was a challenge to blend aesthetic considerations with the mass necessary for a successful sound-deadening barrier. A buttressed wall of precast concrete units was selected because the system could be made to a consistently high quality finish, have foundations that could be placed within a limited zone width and could bridge the route of major utilities. Triangular buttresses spaced about 21 feet on center support four horizontal panel units per bay, each panel resting on the one below and spanning between buttresses under aircraft blast loading.