Try to point your friend in the direction of various support within the School
You should also realise the limits of what you can do, especially if things are getting much worse.
If you are concerned about someone taking their own life, or seriously harming someone else, seek urgent advice from someone in the School (for example any of those listed above), even on a confidential basis.
If you are unable to do this or the situation becomes very urgent contact the person's GP, if known, or take them to the nearest Accident and Emergency centre or NHS walk-in centre.
The Student Counselling Service and Disability and Wellbeing Service both have drop-in sessions available each day at 3pm.
For out of hours support, see emergencies/ feeling suicidal.