Dr Oliver Segal: PFA with Affera at The Harley Street Clinic

Oliver Segal is a London cardiologist and electrophysiologist whose official practice describes current AF catheter ablation using PFA and the Affera/Sphere-9 system. Procedures are at The Harley Street Clinic, Weymouth Street; consultations are at 14 Devonshire Street or by phone/video. His published £350 consultation fee is not the price of ablation. [1][2][3]

Identity, practice and treatment site

The practice identifies Dr Oliver Segal as MBBS, MD, FRCP (London), FHRS, specialising in AF and other heart arrhythmias. HCA’s December 2025 announcement names him as a consultant cardiologist and electrophysiologist at The Harley Street Clinic. This is an official practice/institution attribution, not an independent performance rating. [2][5]

The practice explicitly places operations and procedures at The Harley Street Clinic on Weymouth Street. HCA gives the hospital’s address as 35 Weymouth Street, London W1G 8BJ. The 14 Devonshire Street consultation address and remote consultations are distinct from this procedural site. [2][6]

What the Affera programme means in practice

The current AF-ablation page says Segal conducts AF catheter ablations using PFA. Affera/Sphere-9 allows mapping, ablation and validation with a single catheter and can also deliver radiofrequency energy if needed. PFA delivers electrical pulses through a catheter introduced through a vein at the top of the leg; the practice describes general anaesthesia. [1]

Potential advantages include less impact on nearby critical structures and a shorter procedure. These are practical technology features and institutional descriptions, not proof of a higher personal cure rate. Bruising, bleeding, fluid around the heart and stroke remain possible; ablation can need repeating. [1][7]

The practice treats AF and other heart-rhythm disorders and describes ablation for life-limiting symptoms not successfully managed with medication or other approaches. Its broader list of arrhythmias is not proof that PFA is indicated for every listed condition. [1]

How assessment starts

Contact the practice on 020 3553 9370 or use the official consultation page. New and follow-up visits are scheduled for 30 minutes. Bring previous ECGs, test results and referral letters if available. Insured patients are asked to obtain a pre-authorisation code and establish coverage and any shortfall before attending. [8][2]

Initial consultations may be by phone or video for people further away or with accessibility concerns. The treating doctor uses the assessment and tests to recommend a plan. No appointment slot, personal PFA volume or individual suitability has been verified for this guide. [2][1]

Evidence relevant to the device—not a personal success rate

The HCA programme announcement supports the actual Affera service and named clinician link. ADVENT is a primary randomized publication relevant to the wider PFA choice, but it studied FARAPULSE—not Affera—in drug-refractory paroxysmal AF. Its outcomes must not be presented as Segal’s or Harley Street’s results. No clinician-authored Affera outcome publication was established in this bounded source review. [5][9][10]

What the £350 fee covers

Segal’s HCA profile lists a £350 GBP new appointment and a £350 GBP follow-up appointment, checked 8 October 2026, without a stated expiry. These are consultation fees. HCA’s policy says specialist consultation and treatment fees are separate from hospital charges and settled directly with the consultant. An individual PFA estimate is still required; no all-in ablation price is published in these records. [3][4]

Aftercare through the practice

For Segal’s practice, the published AF-ablation aftercare route includes monitoring during recovery and periodic heart monitors and ECGs if AF does not recur after medication withdrawal. His consultations page offers 30-minute follow-up visits; the practice appointment number is 020 3553 9370. This is general AF-ablation and practice information, not a fixed PFA-specific schedule or confirmation of remote postoperative visits. Medication withdrawal must follow the treating team’s current plan, not be inferred from this description. [11][8][2]

HCA lists an intensive care unit at The Harley Street Clinic. The reviewed sources do not specify the patient’s out-of-hours PFA contact or transfer protocol. Those remain individual discharge details, not a promise made by the appointment line. Do not stop anticoagulants or other prescribed medicines based on this profile. [6][11]

Official portrait and media

An official portrait is available on Oliver Segal’s practice website, linked below. The practice website provides the portrait attribution. No portrait is reproduced on this page. [2]

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