The short answer is yes, for most couples who genuinely commit to it, though not in the way the numbers that circulate online suggest. In a 2022 review in Family Process, Jay Lebow and Douglas Snyder concluded that the average person receiving couple therapy finishes treatment better off than 70 to 80 per cent of comparable people who receive no treatment at all. That is a strong result. It is also routinely misquoted as an ’80 per cent success rate’, which it is not. I am a UKCP-registered psychotherapist who has worked with individuals and couples in London for more than twenty years, and this is my honest reading of what the evidence does and does not promise.
What does ‘working’ actually mean in couples therapy?
Before any statistic makes sense, you need to know what it is measuring. In outcome research, couples therapy ‘works’ when it reduces relationship distress: fewer destructive arguments, more warmth and trust, better communication, and a relationship both people actually want to be in. It does not always mean staying together. Some couples use therapy to repair; others use it to understand their pattern clearly enough to separate with less damage, particularly where children are involved. I count both as good outcomes, and so does most of the research.
That widely shared ’70 to 80 per cent’ line deserves a proper explanation, because it describes an effect size, not a success rate. It means the average treated person ends up doing better than the large majority of untreated people, which is not the same as eight in ten relationships being saved. The same review makes a point that gets far less airtime: distressed couples who receive no help show little improvement on their own. Waiting it out is a strategy with genuinely poor evidence behind it.
What does the research actually show?
The overall picture is consistent. A 2025 systematic review and meta-analysis in the Iranian Journal of Public Health pooled twelve studies from the past decade and found a large overall effect of couple interventions on marital distress (a standardised effect size of 0.85). The authors are honest about the limits, noting real variation between studies and signs of publication bias, which is exactly why I would rather show you ranges than a single headline number.
Earlier and larger: a 2019 meta-analysis in the Journal of Marital and Family Therapy covering 33 randomised trials and 2,730 participants found both behavioural couple therapy and emotionally focused couple therapy to be well-established treatments, with medium post-treatment effects. It also found that gains can fade over longer follow-up for some couples, which is why good therapy builds maintenance into the ending rather than stopping at the first good month.
Here is the granular result almost nobody quotes. In a 2017 study of emotionally focused therapy, reported in a 2020 review in Clinical Psychology in Europe, 61 per cent of couples fully recovered, 11 per cent improved without full recovery, 25 per cent were unchanged, and 4 per cent got worse. And in the 2022 Family Process review, roughly 35 to 50 per cent of treated couples had deteriorated or divorced when researchers checked four to five years later. I share those numbers deliberately. Therapy helps most couples; it does not help all of them, and anyone who tells you otherwise is selling something.
When doesn’t couples therapy work?
The failures are more predictable than people expect. Therapy struggles when one partner has already left the relationship in their head and attends to soften the landing. It struggles when someone comes to have their partner fixed while keeping their own contribution off the table. It struggles when something important stays concealed, most often an ongoing affair or an active addiction, because the therapist is then working with a version of the relationship that does not exist.
It also struggles when a serious individual difficulty is going untreated. Severe depression, unmanaged trauma, or dependence on alcohol or drugs will keep pulling the joint work under, and sometimes the honest recommendation is individual therapy first, or alongside.
And there is one absolute exception rather than a struggle: abuse. Where there is violence, intimidation or coercive control, joint sessions are not appropriate, because the less powerful partner cannot speak freely and what they say can be used against them at home. That situation calls for separate, specialist support and safety planning first. Abuse is not a communication problem, and no couples exercise makes it one.
Does couples therapy work if only one of you wants to go?
This is the question I am asked most often, usually by the partner who is carrying the relationship’s hope. The honest answer: joint therapy needs both people in the room and at least minimally willing, but a hesitant partner is not the same as a hopeless situation. Reluctance is often about fear of being blamed, and a good first session is designed not to do that. Where one of you is leaning in and the other is leaning out, the first piece of work is not repair but clarity: understanding the pattern well enough to make a real decision about the relationship’s future, together.
If your partner will not come at all, starting on your own is a legitimate move rather than a consolation prize. You work your side of the pattern, and because a relationship is a system, one person changing their steps genuinely changes the dance. Sometimes that is what makes the invitation to joint work land differently six weeks later.
How long does couples therapy take, and what does it cost in London?
For scale, the NHS offers behavioural couples therapy where relationship problems are contributing to depression, and its guidance describes a typical course of 15 to 20 sessions over five to six months. Private work follows a similar rhythm: weekly at first, often spacing out as things steady. In my own practice I review progress every six to eight sessions, so the work keeps a clear shape rather than drifting.
My couples sessions are 60 minutes and start from £250, with full details on the therapy fees page, and the first step is always a free 20-minute initial consultation so we can judge fit before you commit to anything. One practical caution for anyone comparing therapists: ‘counsellor’ and ‘therapist’ are not protected titles in the UK, so check for registration with a body such as UKCP, and ask directly about training in couples work, because seeing an individual therapist as a pair is not the same thing.
What makes the difference?
Four things separate the couples who improve from the couples who do not, and none of them is luck. Coming earlier rather than later, before resentment has hardened into contempt. Both partners owning some share of the pattern, rather than one prosecuting the other. Practising between sessions, because insight without behaviour change decays quickly. And working with someone specifically trained in couples therapy, using an approach with actual evidence behind it, such as emotionally focused or behavioural couple therapy.
One more factor I see weekly in my practice: neurodivergence. When one or both partners are ADHD or autistic, familiar couple patterns carry different meanings, where forgetting is not indifference and shutdown is not stonewalling, and standard couples advice can quietly make things worse. That work is absolutely doable, but it needs a therapist who understands both the relationship dynamics and the neurology, which is a core part of how I work with adult ADHD and the couples it touches.
My own approach is integrative, including emotionally focused and behavioural methods where the evidence points, shaped by more than twenty years across NHS, private and community mental health services, training at the Tavistock and Portman NHS Foundation Trust, and CBT studied at King’s College London.
Weighing it up?
If you are turning this over at 11pm wondering whether to suggest it to your partner, that is usually the sign it is worth a conversation. Book a free 20-minute initial consultation and we will work out together whether couples work, individual work, or something else entirely is the right first step.
If you’re in crisis right now, call Samaritans free, 24/7, on 116 123, or call 999 in an emergency. This is planned support, not crisis care.
Ready to talk it through?
If anything here resonated, you don’t have to work through it alone. Book a free, no-obligation 20-minute discovery call with Sabbir Ahmed, UKCP-registered psychotherapist and EMCC-accredited coach, to talk through where you are and find the right way forward.
Frequently asked questions
What is the success rate of couples therapy?
There is no single rate, because studies define success differently. Across the research, roughly 60 to 75 per cent of couples improve meaningfully, and the average treated person ends therapy better off than 70 to 80 per cent of untreated people. Claims of 90 per cent success are best treated as marketing.
Does couples therapy work if only one partner wants it?
Joint sessions need both of you at least minimally willing, but a reluctant partner is common and workable; the first sessions aim for clarity, not blame. If they will not come, individual therapy genuinely changes relationship patterns from one side.
How many sessions does couples therapy take in the UK?
The NHS describes a typical behavioural couples therapy course as 15 to 20 sessions over five to six months. Privately, it varies with what you bring; I review progress every six to eight sessions so the work stays purposeful.
When is couples therapy not appropriate?
Where there is violence, intimidation or coercive control, joint therapy is unsafe and separate specialist support comes first. It is also unlikely to help while an affair or addiction stays concealed, or while a serious individual condition goes untreated.
References
- Lebow, J. & Snyder, D.K. (2022). Couple therapy in the 2020s: Current status and emerging developments. Family Process.
- Joseph, B., Joseph, V.K. & Rajan, S.K. (2025). Effectiveness of Couple Interventions in Marital Distress: A Systematic Review and Meta-Analysis. Iranian Journal of Public Health.
- Bodenmann, G. et al. (2020). Cognitive-Behavioral and Emotion-Focused Couple Therapy: Similarities and Differences. Clinical Psychology in Europe. (carries the Wiebe et al., 2017 outcome figures)
- Rathgeber, M. et al. (2019). The Efficacy of Emotionally Focused Couples Therapy and Behavioral Couples Therapy: A Meta-Analysis. Journal of Marital and Family Therapy.
- NHS (2026). Treatment: Depression in adults (behavioural couples therapy).