Not the appropriate place for a rant? But I cannot resist listing these annoyances:
Using the train as an office, Using the train as a music centre, Any form of music in the office, Any form of musac anywhere.
Dress down Friday, Dress down any day, A shirt and suit without a tie, Trousers worn around the knees, Trainers worn in the office.
Inane conversation, Like, Kinda like, You know what I mean, Affectation - talking loudly.
Open plan offices, Open plan houses.
Eating in the street, Drinking on the pavement.
International call centres.
"No thinking required" approach.