Living with obsessive-compulsive disorder, intrusive thoughts, or anxiety-driven compulsions can be exhausting — the constant urge to neutralise discomfort often reinforces the very cycles that maintain distress. Exposure and Response Prevention (ERP) is an evidence-based treatment, recognised as the gold-standard psychological intervention for OCD and related conditions, that works by gradually reducing the power of triggers whilst helping individuals resist compulsive or avoidant responses. Over time, this process recalibrates the relationship with anxiety, building genuine tolerance rather than temporary relief. Tara O’Donoghue is a BABCP-accredited ERP therapist based in Marylebone, London, offering formulation-led treatment tailored to each individual’s presentation and goals. The following outlines how ERP works and what to expect from treatment.
What is Exposure Response Prevention therapy?
ERP (Exposure and Response Prevention) (also referred to as exposure therapy or exposure-based CBT) is a specialist form of Cognitive-Behavioural therapy (CBT) used to treat obsessive-compulsive disorder (OCD) and related conditions including hoarding, social anxiety, body dysmorphic disorder (BDD), and phobias such as Emetophobia. It is also effective for presentations such as Pure O (intrusive thoughts without visible compulsions), health anxiety, and contamination-related fears.
How does ERP differ from standard CBT?
Standard CBT focuses primarily on identifying and challenging unhelpful thoughts. ERP takes a different approach — rather than examining the content of thoughts, it focuses on changing your relationship with anxiety itself, through direct experience. By repeatedly facing feared situations without engaging in compulsions or avoidance, you learn that anxiety reduces naturally on its own. Cognitive elements of CBT may be woven in where helpful, but the exposure and response prevention work remains central.
What does ERP involve?
The goal of ERP therapy is to support an individual to confront their fears and reduce anxiety by gradually exposing themself to situations, people, places or objects that trigger anxiety or compulsions, while at the same time preventing the individual from engaging in their usual compulsive behaviours.
For example, if an individual avoids going outside, the therapist and individual both can agree on step-by-step goals to face anxiety whilst dropping unhelpful coping behaviours and challenging negative thinking patterns and beliefs associated with this fear. In another example, someone in London who avoids the Underground due to contamination fears or intrusive thoughts might work through a graded hierarchy beginning with approaching a station entrance, progressing toward travelling short routes, and eventually travelling during peak hours without engaging in any checking or avoidance behaviours. If someone has a fear of harming others and compulsively tries to get rid of thoughts by washing their hands, the Psychotherapist may start by asking the individual to write down the distressing thought and to shake hands with someone without washing their hands immediately afterwards.
For someone experiencing intrusive thoughts without any visible compulsion (sometimes called Pure O) ERP might involve sitting with a distressing thought whilst resisting the urge to mentally review, reassure oneself, or seek reassurance from others. Over time, the therapist and individual may agree together to gradually increase the level of exposure, such as having the person touch more and more objects or spend longer periods of time without washing their hands whilst having the thought in mind.
The response prevention aspect of ERP therapy involves preventing the person from engaging in their usual compulsive or avoidant behaviours, even when they are experiencing anxiety. This is because the compulsive behaviours reinforce anxiety and make it worse over time, increasing the individual’s preoccupation with what they fear. By preventing the individual from engaging in their compulsions, the Psychotherapist helps them learn that their anxiety will eventually decrease on its own, without the need for the compulsive behaviour. The individual’s tolerance increases, so previous situations faced, no longer feel so anxiety provoking.
Why use ERP?
ERP therapy can be challenging and will cause temporary discomfort or anxiety, but research consistently shows that it produces meaningful improvement in many people with OCD, making it one of the most effective psychological treatments available and the approach recommended by NICE (the National Institute for Health and Care Excellence) in UK clinical guidelines. In practice, ERP is typically delivered over 12 to 20 sessions, though the number varies depending on the complexity of the presentation and the pace that feels right for each individual. ERP is often integrated with elements of CBT, such as cognitive restructuring, where this supports the exposure work, but the exposure and response prevention components remain central to lasting change. If you have tried to manage OCD or anxiety through willpower, avoidance, or reassurance-seeking alone and found relief to be short-lived, ERP addresses the mechanism that keeps the cycle going.
Is ERP right for me?
ERP may be the right approach if you recognise any of the following:
- Intrusive thoughts, images or urges that feel distressing and difficult to dismiss
- Repetitive behaviours or mental rituals you feel compelled to carry out to reduce anxiety
- Avoiding certain situations, places, people or objects to prevent triggering discomfort
- Seeking reassurance repeatedly — from others or from yourself — without lasting relief
- Knowing your fears are unlikely but feeling unable to act against them
- Finding that relief from compulsions or avoidance is temporary, and the anxiety always returns
If you are unsure whether your difficulties fit this pattern, the initial assessment is the right place to explore it.
Contact
Taking the first step towards ERP treatment can feel daunting, particularly if you have been managing OCD or anxiety for some time. The assessment session is a no-pressure conversation to explore whether this is the right approach for you. To schedule an assessment with Tara, an ERP therapist based in London offering both in-person (including home visits across London) and online sessions, please click here. You can also send enquiries via email: info@homebasedtalkingtherapy.com.