Visit to my son in Crawley

We've just come back from visiting my older son in Crawley. We had a good time but although it stayed dry, it could have been warmer. On the way home we had some spare time to wait at Kings Cross station so I decided to pay a visit to the British Library. I was enjoying looking at an exhibition of old books when suddenly my phone started ringing. I tried to swipe the screen to answer it but it wouldn't work. The next thing I realised that one of the guards was telling me to leave the room. It was so embarrassing