I once mentioned this in a job interview when I was on time and the interviewers were ten minutes late. I wasn't having a pop at them but I didn't get the job
vienna1981 How late were your people? Mine changed my interview time from 10am to 8.30am. I'd rather had the later time but it was local so it was no real bother.
When I arrived 10 minutes early, the office was locked. I thought they'd turn up in 5 or even 10 minutes.
The first person turned up at a few minutes to 9am. The second at about 9.15am. No real apology. I didn't mention it. I could barely say anything because it was a January, there was a light dusting of snow, and I had on a big coat, gloves and a scarf but flimsy interview clothes and shoes.
I didn't get the job either but somehow I don't think I'd have liked it there if they were prepared to do that to me at the interview.
Other times I'm not that bothered about timekeeping. I think anything up to 15 minutes late, unless you have a train to catch, is fine.
I have a really special friend who has been up to two hours late for me. She doesn't think she's better than me. She's just crap at time-management - and yes, for all those people who say persistent latecomers always pull it out of the bag on important occasions, she has missed planes and turned up late for interviews and been sent away.
Now I arrange to meet her at the place and will go in if I want rather than hang around for her, because she is a great friend who's worth waiting for.
We're going on a fantastic two-day jolly tomorrow - courtesy of her work - and we have to catch a boat at 1pm sharp or we'll miss the whole thing. We spoke last night and I said we should get there at 12.30pm. My timekeeping's not the greatest either, but I know that to do that I have to leave at 12pm at the latest. Consequently my bag is going to be packed and hair washed before I go to bed tonight.
She agreed. I predict she will turn up in the nick of time, red-faced, sweating and having thrown a ton of money at a taxi driver 
If we do miss the boat, I guarantee that she will bundle us in a taxi for the 30 mile drive and hope to claim it on expenses or cover it herself.
I like her. She's a latey but a keeper.