ðə sˈɛvən ænd nˈaɪn slˈæʃ nˈaɪn ˈeɪ wɜːɹ ʌpɡɹˈeɪdᵻd ɪn tˈuː θˈaʊzənd sˈɪkstiːn, wɪððə lˈæɾɚ ɹᵻsˈiːvɪŋ ɐ bˈætʃ ʌv bɹˈænd nˈuː ˌælɪɡzˈændɚ dˈɛnɪs ɛnvˈaɪɹə fˈoːɹhˈʌndɹɪd sˈɪɾiz.
The 7 and 9/9A were upgraded in 2016, with the latter receiving a batch of brand new Alexander Dennis Enviro400Citys.