Hi. What is the best company to insure my laptop and belongings while in Halls in London?
The University of Bristol do this -- see http://www.bristol.ac.uk/secretary/i...-for-students/ -- so it's possible that your university/accommodation provider might do the same.
Make sure you read the policy wording carefully to be sure you're covered appropriately, and make sure you keep doors and windows locked. With your laptop, bear in mind that if you get your laptop stolen you might get it replaced but will lose the data on it, so make sure you have backups setup, and know how to restore from them!