In the UK, I went for a Perl programmer job interview a few years ago in a suit and was told I was overdressed. I then went back to the same company for another

In the UK, I went for a Perl programmer job interview a few years ago in a suit and was told I was overdressed. I then went back to the same company for another interview a couple of years later, in jeans and a polo-shirt and nobody said anything, but I was looked up and down and it was pretty clear to me I was underdressed that time. I wasn't offered either of the positions. No idea if the way I dressed had any bearing on it.