Relate is a national charity which has been established for over 60 years and helps people with their couple relationships. Their website provides a background as to how the service works and includes a national register of centres and phone numbers. They provide counselling for couples and individuals who are experiencing relationship difficulties. You may be trying to make a relationship work, you may be separating or the relationship may have ended. You do not need to be married to use this service. They also provide help with sexual problems and offer counselling for children/young people whose parents are separating.
You need to contact them by phone for an appointment in your area. You will be charged for the counselling, however this is based on your income and not a flat fee.