[kirklancaster]

If British people in a public environment want to discuss something personal or private, then they wait until an opportunity presents itself then find a quiet spot to do so.

English speaking foreigners can do exactly the same.

The only time when English speaking foreigners speak in a foreign language in front of English people is when they ARE discussing something which they DO NOT want the English people around them to understand.

And USUALLY this is BECAUSE they ARE talking about THEM - in a derogatory manner - in my experience.

Even when the above may NOT be the case - it is still ignorant to speak in a foreign language in front of English people when you CAN speak English - in my opinion.