I highly recommend this service. I was really struggling with juggling everything this evening and just wanted to talk to someone. They have a phone line and instant chat (which I used) and am feeling much better now :)
The service is run by students for students from 6pm to 8am during university term times.
Details for the London one are here:
nightline.org.uk/
Other nightlines are run by other universities (I volunteered at my undergraduate one many moons ago)
Hope someone finds this useful! 