UK:

Shelter 0808 8004444
Samaritans 116 123
The CALM Zone 0800 585858
WomensAid 0808 2000247
MindCharity 0300 1233393
SwitchboardLGBT 0300 3300630
LGBTfdn 0345 3303030
Specifically here in Scotland:
Breathing Space 0800 838587
Break the Silence (Monday to Friday 9am-4.30pm) www.breakthesilence.org.uk
Shelter Scotland https://scotland.shelter.org.uk
Chris