Yes we had that as well yesterday
DD said they started their exam and part way through it was announced there was a problem with some questions, they were asked to put down their pencils whilst new papers were handed out and then asked to carry on and were allowed 3 mins extra at the end, so it seems to have been handled ok, we get that paper back marked tomorrow so will look at it then.
Someone remind me how long they have been using these same practice papers and they still don't get it right???
Glad it wasn't the real thing though!!