I spoke to the 185 Bus Driver today, as the bus terminated early at Vauxhall, he said "too much traffic on the roads" but there is another 185 behind,, and yes there was, tag teaming the 185 infront, and that had also terminated at Vauxhall and was told to go back towards Lewisham?? have emailed TFL a couple of times , who are looking at it, if you are also experiencing this grind for your journeys, may help and add more weight to the issue of reduced bus services generally, which have not kept up with people returning to office/work.
customerservice@tfl.gov.uk
they reply quicky to give an acknowledgement response they are looking into matter, but sure it will only move along with more complaints.