Glasgow Caledonian (my insurance) sent me a good luck card before my exams.
Also, I missed my offer from Strathclyde cos I got flu during my exams, but the school contacted them and explained.
I emailed them to check if everything was going ok because UCAS was crashing and got an email in reply signed off with "The most important point is that your place is secure, so please relax. I look forward to seeing you in September"
I've saved the email because it's the best one I've even received haha. So relieved to know that I had got in!