I was actually listening to Anna Raeburn on LBC 97.3 when she was talking about the same thing. i wanted to make a post about it long time ago but i forgot it, so Anna reminded me of it in a way!
1 - Don't worry, everything's gonna be alright - Why do people patronise others with such a statement? A close friend or a relative dies and thats how they pay their condolences! No everything is NOT gonna be alright, i just lost my Aunt! it's better to be silent in such circumstances!
2 - Ah! Nice - Nice, This word ha no value attached to it. It has been stripped of any special meaning it once possessed. When you ask someone 'how was your day?' and they reply "Yeah, it was nice!" In fact it wasn't anything near nice. Or 'That girl is nice' No she isn't anything like it - It’s just said as an automatic response and has no any sentiment attached to it.
3 - Please, Bear with me - You call up some business and after going through the whole burden of the automatic answering machines and pressing of so many a buttons, someone finally picks up the phone and you have a "human contact". You inquire about something and they reply "I will just check it up, please bear with me Sir" and they play you a dreary tune to keep you waiting. I mean, what burden has it got on them when they say bear with me. I've been bearing with you for over 15 bloody minutes and now you want me to bear more and with You!
4 - You Know - Why do people use this term loosely? Someone is explaining something to you - something you've never heard of and they say “…then you get this around here, to get rid of this stuff you know, then...and it’s done” No I don’t know. If I knew would I be asking you?
5 - Innit - generally used among the younger folks as a short for 'aint it". It really is annoying specially when used with a strong cockney accent. "It's o'aight Bruv, innit"
...I'll add some more as i think of them.