I don't use Southeastern often, I did today on my way to and from France via Dover, I witnessed the same reoccurring problems that have concerned me in the past.
Metro services are constantly filthy, every inner suburban working I have been on this year has been totally disgusting. Do they ever clean or maintain them? I used a 465 from Woolwich Arsenal to London Charing Cross in July and the bins had overflown, litter had been left in the luggage racks, floors were stained from drinks and other fluids, windows were etched, seats were loose, the gangway doors didn't work, the announcements were crackly. It was like a motorised pigsty!
On Mainline 375s, has anyone noticed the skirting around the edges of the interiors is beginning to decompose? There seems to be a very worrying brown/green mold growing on the flooring on their Electrostars.
hock: It's more noticeable on the older 375/3 and 375/6 than the newer 7/8/9s.
Since the CTRL-DS service has been introduced as a part of the IKF franchise, the impression given by SE is that the Metro and Mainline sectors have been abandoned and left to rot.