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Len Kleanthous

Psychotherapy London

Len Kleanthous

6 years of experience

3,080+
Patients seen
6
Years in practice
7
Publications
1
Languages spoken

PROFILE SUMMARY

About Len Kleanthous at a glance

Len Kleanthous is a Psychotherapy practitioner based in London, United Kingdom, practising at UAB Barcelona Teaching Hospital. They have 20+ years of clinical experience. Procedures focus on gp consultation, annual physical exam, vaccination administration, minor procedure (skin). Educated at UAB Barcelona (MD, 2016). Serves patients in London, United Kingdom and the surrounding area.

VERIFIED PHYSICIAN PROFILE · UPDATED MAY 2026

About

Len Kleanthous is an experienced psychotherapist with a career spanning over two and a half decades in addiction counselling and more than a decade in mental health. 
As well as addiction, Len is skilled in addressing challenging thought processes and negative beliefs that influenced their moods and behaviours. To further enhance his therapeutic approach, Len pursued training in Cognitive Behavioral Therapy (CBT) and Dialectical Behavioral Therapy (DBT) Skills, which he integrates into his therapeutic work.
Len enjoys working in one-on-one therapy, and he practises as a relational therapist. His passion extends to group therapy sessions, where he conducts psychoeducational groups on various topics, including self-esteem, emotional awareness, self-care, and financial well-being, as well as DBT skills training. He firmly believes in the power of these group dynamics to foster personal growth and positive change.
Throughout his career, Len has continuously nurtured his professional development and psychotherapy skills. He remains deeply committed to helping his clients enhance their self-worth, overall well-being, and capacity to make meaningful life changes.
In the area of addiction recovery, Len is recognised as a specialist with over 15 years of experience in working with individuals facing addiction and dual diagnosis challenges, as well as their families. He brings a wealth of coping skills and interventions to any team or service dedicated to assisting clients in their pursuit of change, personal growth, and a life free from addiction.
Len is known for his compassion, empathy, and encouragement, which he offers to clients throughout their recovery journeys. His consistent support has been a source of inspiration and transformation for many individuals seeking recovery.

“Evidence-based care tailored to each patient — taking the time to explain options and shared decisions.”

— Len Kleanthous

Education & training

  1. 2010–2016 MD · Medicine and Surgery
    UAB Barcelona, London (GB)
  2. 2016–2020 Residency · Psychotherapy
    Universidad de Sevilla, London (GB)
  3. 2020–2021 Fellowship · Subspecialty training
    Royal Marsden London, UK

Career & appointments

  1. 2020-09–2021-08 Junior consultant
    UAB Barcelona Teaching Hospital — Psychotherapy

Licenses & insurance

Medical licenses

GB — Organización Médica Colegial de España (OMC)
#GB-674885 active · expires 2028-12-31

Board certifications

European Board of Psychotherapy
#EB-86FF0118 · issued 2021 · renewal 2031
Malpractice insurance: HDI Global · 1,000,000 EUR coverage · No claims on file

Procedures performed

ProcedureCodeLifetime count
GP consultation 99213 649
Annual physical exam 99395 2,399
Vaccination administration 90471 799
Minor procedure (skin) 17110 712

Services & pricing

ServiceDurationModalityPrice
New patient consultation (60m) 60 min in_clinic|telemed 180.00 EUR
Follow-up consultation (30m) 30 min in_clinic|telemed|phone 90.00 EUR
Vaccination administration 120 min in_clinic 720.00 EUR
Minor procedure (skin) 30 min in_clinic 630.00 EUR

Office, team & in practice

Len Kleanthous
HEADSHOT
Len Kleanthous in consultation
IN OFFICE
Len Kleanthous with the team
WITH TEAM
Len Kleanthous at a conference
CONFERENCE

Videos

introduction · 147s
Meet Len Kleanthous

Research & publications

h-index: 12 · i10: 6

  1. Outcomes of Psychotherapy in adults — a multi-centre cohort
    Len Kleanthous, et al. · European Journal of Medicine, 2025
    DOI: 10.4338/euroclin.2025.0 · PMID: 33009068 · cited by 153
  2. European registry analysis of Psychotherapy outcomes
    Len Kleanthous, et al. · European Journal of Medicine, 2024
    DOI: 10.5248/euroclin.2024.1 · PMID: 31650042 · cited by 187
  3. Outcomes of Psychotherapy in adults — a multi-centre cohort
    Len Kleanthous, et al. · European Journal of Medicine, 2023
    DOI: 10.5100/euroclin.2023.2 · PMID: 35730888 · cited by 13

Invited talks

  • Practical updates in Psychotherapy European Annual Congress (Psychotherapy) · Vienna · 2024 · invited
  • Single-centre experience in Psychotherapy National Society Meeting · London · 2023 · oral abstract

Awards & memberships

Awards

  • 🏆 Top-rated Psychotherapy — London · EuroClinics Patient Choice · 2025 · regional

Society memberships

  • WONCA Europe — Family Doctors — Member · Since 2021
  • national college of family doctors — Member · Since 2021
  • European Union of Medical Specialists (UEMS) — Member · Since 2021

Articles by this doctor

  • Patient education Patient guide to Psychotherapy 2026-03-02 · 9 min read
  • Awareness When should you see a psychotherapy? 2026-01-17 · 9 min read

For international patients

Coordinator
Patient liaison · len.kleanthous@euroclinics.example

Location

1 tag

Patient reviews

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Recent reviews

  • ★★★★★ ✓ Verified
    Very thorough first visit — explained every step. Booking was easy and the staff were welcoming.
    Anna B.
  • ★★★★★ ✓ Verified
    Took time to listen and reviewed all my previous results. I would absolutely recommend.
    Marco V.
  • ★★★★☆ ✓ Verified
    Professional and knowledgeable. Wait on the day was a bit long, otherwise excellent.
    Helena F.

SPECIALTIES & PROCEDURES

Len Kleanthous's Areas of Specialty

Each specialty below reflects the conditions and procedures Len Kleanthous treats, with the size of the national pool of United Kingdom doctors offering the same care.

Psychotherapy

Len Kleanthous is one of 615 psychotherapy doctors indexed in United Kingdom. Browse psychotherapy doctors in United Kingdom →

LOCAL CARE CONTEXT

Why local healthcare in London matters

Medical practice in United Kingdom is governed by country-specific licensing, professional standards, and patient-safety regulations. Practitioners listed here are registered with the relevant United Kingdom medical authority and operate within national rules on scope of practice, prescribing rights, and continuing professional development. Care delivered in London carries the additional benefits of local language support, in-person follow-up, and direct coordination with regional hospitals and labs. A verified profile means EuroClinics has cross-checked the practitioner or clinic against an official source (national medical register, public licence database, or the practitioner themselves), and that the data shown here matches that source as of the last verification date above.

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Frequently asked questions

Quick answers to the questions patients ask most. The same answers are surfaced to AI assistants via structured data.

  • What does Len Kleanthous specialise in?

    Len Kleanthous specialises in Psychotherapy in London, GB. 20 years of clinical experience.

  • What conditions does Len Kleanthous treat?

    Len Kleanthous treats conditions within Psychotherapy. View the full conditions-treated list on the profile.

  • Where does Len Kleanthous practise?

    Len Kleanthous practises in London, GB. The profile page lists all practice addresses, phone numbers, and clinic affiliations.

  • What languages does Len Kleanthous speak?

    Len Kleanthous speaks English.

  • How do I book an appointment with Len Kleanthous?

    Use the "Request a booking" button on the profile to send an appointment request. Most appointments are confirmed within 24 hours; many slots are bookable instantly.

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