Relate - offer advice, relationship counselling and mediation.
Marriage Care - support people through the best and worst times in their marriages and family relationships. Counselling and mediation.
Retrouvaille - England and Wales - provide help and support for troubled marriages
St Albans Counselling and Psychotherapy - provide counselling and psychotherapy for couples or individuals who have recently separated.
Divorce Diaries - provides insights into divorce from those who have been through it.