I was pleased to see this thread, because I'd beeen wondering whether I should start a thread about Arriva's Medway operation. Unfortunately, it's become a bit of a shambles in the last few months. The "flagship" 101 to Maidstone is an exception; it's fast and reliable, but most of the rest not so much.
Reliability is poor at the moment; I shall use the route on which I travel most as an example. My route is the 145, which is probably a horrible route to drive on. Most of it is effectively on single track road, loadings are high and include a lot of pushchairs, and there's a loop at one end which currently seems to be regarded as optional. Sometimes there is a handwritten note saying "Not Orion Road", but sometimes they just don't go there. On Saturday afternoon just gone the route was operating a bus short, which meant some very long gaps later in the afternoon and standing passengers at 1800 on a Saturday.
There have been several recent reports of drivers getting out mid-journey to smoke; that hasn't been a regular sight since the 80s. There are currently a lot of vehicles hired in from other parts of Arriva, some of which are not in peak condition.
Medway has the second highest bus fares on the British mainland behind Warrington, but certainly doesn't have the second best bus service. That 145 has been reduced three times in the last 15 months. It was every 7½ minutes, then every 10, then every 12, and then the evening service was curtailed. (And yet the Sunday service was increased from every 30 minutes to every 20. Every 30 was ample.) This is not for want of passengers, so I can only imagine that it is for want of drivers and/or vehicles.
I've no idea whether Arriva is secretly hoping that another operator will offer to take Medway off their hands, but they show few signs of actually wanting it. You now have to go to Maidstone to buy a Medway annual ticket, because Arriva no longer operates the enquiry office at Chatham Bus Station. There is no stored value card (Kent CC has started one, but neither Arriva nor Stagecoach accepts it, and Arriva simply doesn't have one of its own), and there is no all-operators day ticket other than the south-east wide Discovery (£8.50, as against £4.80 for the all-operators ticket in Luton and Dunstable, which is an area of comparable size and also has Arriva as the main operator).