Looking at Heathrow you might say it uses anything it can lay its hands on. The list of lanterns includes Atlas Alpha 3, Thorn Alpha 8, Thorn Alpha 2000, Thorn Civic, Thorn Riviera, Thorn Pilote, WRTL Arc, Holophane Brooklyn, Holophane QSS, Holophane QSM, Tamlite Tamcrest, Nordex Astra 1, Nordex Astra 2, Kingfisher Kaos, Philips SGS253 Iridium, Philips Malaga SGS102, Philips MA90, Philips MA50, Philips SGS201, Philips SGS203, Philips SGS306 TrafficVision, GEC Z8520, GEC Z8526, GEC Z9545, GEC Z9555, GEC Z9543, GEC Z9553, Phosco P567, Phosco P678, Urbis ZX1, Urbis ZX2, Urbis ZX3, and Urbis Sapphire 2, just to list those I know of, and there are others I may not have seen.
The latest installations that I have seen installed over the past six months are the Thorn Riviera, WRTL Arc, Holophane QSM, Nordex Astra 1 and Tamlite Tamcrest. Evidently the airport owners just go for the best deal of the time when they want new lanterns.
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