Cigarette smoke.
Diesel fumes.
Street furniture.
People attaching "remove your bike from street furniture because your bike is causing obstruction" (and the street furniture isn't?).
People who sit in priority seat on trains then don't get up if someone more needy requires it.
People who think they have right of way (example coming out of lifts, drivers thinking they can go when pelican crossing is flashing amber and people are still crossing).
Cyclists crafting me on the commute.
People walking in circles when talking on phone.
Two people walking together yet talking to others on their mobile phones.
Mobile phone companies not giving 4G signal everywhere I go.
Broadband internet which is never as fast as advertised, and then slows down further as more people hook up.
People telling me "sharing is caring", especially when they want something.
Liars, people who talk the talk but don't walk the walk.
People who think change doesn't happen.
Narrow minded conservative people who cant accept new stuff.
Good thing I have a meeting now or I wouldn't stop. Actually these things don't really irriatate me but u couldn't let this thread go without at least writing something.
Oh, and people who don't understand Apple, or BMW, or Porsche, or good design. Or cheapskates. OK, meeting...