My wife has a 5 year B permit (with about 4 1/2 years to go) and a UK passport. She has had to give her passport to the Indian embassy for a visa.

We want to go to Germany for a day trip on Saturday, by road, and would like to know if we're likely to encounter any problems using the B permit as obviously she won't have her passport.

Any experience of doing this?

You can try, but if they ask you going out they will be giving you a day pass based on documentary evidence which at the last time of asking was Euro 50. Coming back you will only get a bollocking - don't say it is at home or they might send you for it, say you have left it in the office...

I was once with a few friends in a car driving along a small country and before we realized it we were in Germany. We returned by a different road and were stopped by the Swiss boarder police, the only ID I had on me was my credit and bank cards along with my Swiss drivers license. I showed it to them, said sorry and they said no problem and let me pass. That was some 10 years ago but since then I make sure I have my pass with me every time now.

You don't have a British ID or drivers license of some sorts..?