Rooted in relationship science, behaviour change theory and behaviour modelling training, we build targeted interventions that help people to help themselves

Are you looking for our offer on parental conflict? 

View our offer


Who we are and what we've been doing since 1971

Our work

See the projects we've collaborated on, and what we've achieved


Read about our specialist workforce and practitioner training

Our resources

A collection of our digital resources for helping people to build relationship skills


Find out how research and evidence underpins everything we do

News + blogs

A space to share thoughts on recent projects, industry news, and events

A note from OnePlusOne

Having constructive, supportive relationships has never been as important as it is right now. As a charity focused on relationships, OnePlusOne understands that the coronavirus pandemic is having drastic effects on the way people are living their lives.

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Parenting in lockdown

With news that the lockdown is to be extended for another three weeks, many people are continuing to adjust to a new way of life. Many parents are asking the question, ‘How will we cope?’

Read the full article

Listen to our new podcast

Knowing how to argue in ways that minimise the negative impact on their children is crucial for parents who are separating.  That’s why we are backing a new podcast by law firm Withersworldwide to promote the importance of developing the skills to argue better.

Coping with grief in lockdown

In the fourth of its series of articles relating to the impact of Covid-19 on our lives, we take a closer look at grief to help people adjust to new ways of coping with loss during lockdown.

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Why we exist

The effects of relationship breakdown are vast, impacting:

Children’s mental and physical health

Adult mental and physical health

Employment / employability


Personal finances

Demands on public services e.g. health, social care, legal

Wider economy. Costs to the state of approximately £51 billion


Charity number: 

Registered office:
MHA MacIntyre Hudson,
6th Floor 2 London Wall Place, London, EC2Y 5AU

Link to charity commission:

Financial accounts:


07553 145 460


Media enquiries:

Data protection:


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