Leaving High Wycombe Bus Station for Aylesbury in March 2009 is 3919 (BK58URM), one of a batch based at Aylesbury delivered at the turn of the year to upgrade the branded 300 service.
Passing Morrisons in High Wycombe in June that year is 3924 (BK58URS) which will terminate just after passing Morrisons in Aylesbury.
This time heading for High Wycombe in May 2009 3919 is this time seen in Stoke Mandeville.
More Citaros arrived shortly after to upgrade the 321 service from Luton Airport to Watford. Mercedes 3918 (BV58MKP) leads a line up of 321 branded Citaros at Garston depot in July 2009.
Citaro 3915 (BV58MKD) is seen in Watford town centre in October 2013 on a short working of the 321 to St Albans.