And sound the same too. Around 20 years ago I often walked home three or four miles from a pub quiz night (the things we do when young) at about 11 30pm and usually heard a pair of Darts climbing out of Gatwick on a northerly heading. Asked on here as it could have been Herald, HS748 or F-27 - twas the latter apparently on some mail/post service. Probably last time I heard Darts I think.