How to Write Therapy Notes: A Guide for UK Therapists

Writing good clinical notes is one of the most important — and most time-consuming — parts of running a private therapy practice. Done well, they protect you legally, support continuity of care, and demonstrate professional accountability. Done poorly, they can create liability and take up hours each week.

This guide covers everything UK therapists need to know about writing therapy notes in 2026: what to include, which format to use, how long they should be, your GDPR obligations, and how AI tools can help you write better notes faster.

Why clinical notes matter

Therapy notes serve multiple purposes:

• Clinical continuity — your notes are the record of the therapeutic work. They allow you to track progress, spot patterns, and plan future sessions.
• Legal protection — if a complaint is made, your notes are your primary evidence of what happened in sessions. Clear, contemporaneous notes are your best defence.
• Professional accountability — BACP and UKCP, and the HCPC for practitioner psychologists, all expect practitioners to keep clinical records.
• Supervision — good notes make supervision more productive. Your supervisor can understand the clinical work without needing a full verbal account.
• GDPR compliance — clinical notes are personal data and must be stored, retained and deleted in accordance with UK GDPR.

What to include in therapy notes

Every therapy note should include:

• Date and duration of the session
• Client reference (not necessarily full name — a reference code is GDPR-friendly)
• Session number
• Presenting concerns the client brought
• Clinical observations: affect, behaviour, appearance, mental state
• Interventions used and the client's response
• Progress towards treatment goals
• Any risk factors identified or reviewed
• Plan for the next session

You do not need to include a verbatim account of what was said. Therapy notes are clinical records, not transcripts. Focus on clinical significance rather than narrative detail.

The main therapy note formats used in UK private practice

SOAP notes

SOAP is the most widely used clinical note format in UK therapy. It stands for:

• Subjective — what the client reports: their mood, presenting concerns, significant events since last session
• Objective — your clinical observations: affect, behaviour, appearance, mental state
• Assessment — your clinical interpretation: formulation, progress, patterns identified
• Plan — next steps: interventions planned, homework, referrals, next session

SOAP notes are well-structured, easy to defend clinically, and familiar to most supervisors and colleagues. They work across modalities.

DAP notes

DAP stands for Data, Assessment, Plan. It is a simplified version of SOAP that combines the Subjective and Objective sections into a single Data section. DAP notes are quicker to write and work well for therapists who prefer a less rigid structure.

BIRP notes

BIRP stands for Behaviour, Intervention, Response, Plan. It is more focused on what happened in the session rather than the therapist's interpretation. It works particularly well for solution-focused, CBT and behavioural approaches.

Narrative notes

Narrative notes are free-flowing clinical summaries without a fixed structure. They are favoured by some psychodynamic and person-centred therapists who find structured formats too constraining. They require more writing discipline to be clinically useful.

Specialist formats

EMDR, CBT and Schema therapy have specialist note formats that capture modality-specific data — SUD ratings and processing sets for EMDR, automatic thoughts and homework for CBT, schema modes for Schema therapy. These are available in NoteSono.

How long should therapy notes be?

There is no fixed rule, but a useful benchmark is 150-300 words for a standard 50-minute session. Notes should be long enough to be clinically useful and legally defensible, but short enough that you can write them without it taking another 30 minutes after each session.

If you find yourself writing notes that are consistently longer than 400 words, consider whether you are including too much narrative detail at the expense of clinical analysis.

When to write therapy notes

The best time to write notes is immediately after the session, while the material is fresh.

Leaving notes for days or weeks creates risk. Memory is unreliable. If a complaint is made about a session from three weeks ago that you only wrote up today, the contemporaneity of the note becomes a problem.

A practical approach: spend 5-10 minutes after each session writing a brief summary, then use that to write a fuller note the same day.

GDPR and therapy notes

Clinical notes are special category personal data under UK GDPR (Article 9 — health data). This means they require a higher standard of protection than ordinary personal data.

Your obligations include:

• Lawful basis: you need a documented lawful basis for processing clinical notes, usually contract (Article 6(1)(b)), plus a condition for health data, usually health care (Article 9(2)(h)).
• Retention policy: keep clinical notes for a defined period. There is no statutory period for private counselling records; BACP says private practitioners may keep notes for a minimum of three years after therapy ends, and many keep adult records for six or seven years. State your period in your privacy notice.
• Secure storage — notes must be stored securely, with access controls. Paper notes should be locked. Digital notes should be on a platform hosted in the UK or EU, or covered by a valid transfer safeguard, with a DPA in place.
• Right of access — clients have the right to request copies of their notes. You should have a process for handling subject access requests, which normally need a response within one month.
• Deletion — at the end of the retention period, notes must be securely deleted.

Using AI to write therapy notes

AI note tools have changed clinical documentation for many therapists. The approach that captures least is a post-session summary: you speak a brief summary after the client leaves, and the AI drafts a structured note. The session is not recorded.

NoteSono uses this approach. After a session, you speak for a minute or two, covering what the client brought, how they presented, what interventions you used, and your plan. NoteSono drafts a clinical note in your chosen format, from 20 formats including SOAP, DAP, BIRP, EMDR and CBT. Notes are stored in the EU; some AI processing uses providers outside the UK and EU under data processing terms that exclude training on your data.

The note is yours to review and edit before saving. AI note tools should assist your documentation, not replace your clinical judgment.

Common mistakes in therapy note writing

• Writing too late — notes written days after a session are less accurate and less defensible
• Too much or too little detail — aim for clinical significance, not a transcript
• Using client names — reference codes are GDPR-friendlier and reduce risk if notes are accessed
• No risk assessment — every note should address risk, even if the conclusion is that no risk factors are present
• Not including the plan — the plan section is one of the most important and most often skipped
• Storing notes insecurely — unencrypted files, personal email, or unlocked paper records are GDPR risks