Sciatica and Lower Back Pain in London: What's Actually Causing It and How to Get Lasting Relief

Quick Answer: Sciatica is pain that travels from the lower back or buttock down the leg — caused by compression or irritation of the sciatic nerve. The most common causes are a lumbar disc bulge, piriformis syndrome, or sacroiliac joint dysfunction. True sciatica is not just "back pain" and requires specific clinical assessment to identify the source. At Marques Therapy, 88 Southwark Bridge Rd, London SE1, Sosthenes Marques uses sports therapy, dry needling, and joint mobilisation to identify and treat the structural driver of sciatica — achieving lasting resolution for London clients who have been managing the same symptoms for months or years.

Few symptoms in musculoskeletal healthcare are as debilitating — or as frequently misdiagnosed — as sciatica. The shooting pain down the leg, the numbness or pins and needles in the foot, the inability to sit for more than twenty minutes without needing to stand — it disrupts work, sleep, exercise, and quality of life in ways that most people underestimate until they experience it.

And yet, the majority of London professionals who arrive at Marques Therapy with sciatica have been given the same advice: rest, anti-inflammatories, and "wait for it to settle." Sometimes it does. More often, it settles partially, recurs at the next provocation, and gradually becomes part of the background of daily life.

It doesn't have to be. Sciatica that has a clear structural cause — which the majority does — responds well to specific clinical treatment when the source is correctly identified and properly addressed.

What Sciatica Actually Is

The sciatic nerve is the largest nerve in the body. It originates from the nerve roots of the lumbar and sacral spine (L4, L5, S1, S2, S3), travels through the pelvis and buttock, down the back of the thigh, and branches into the lower leg and foot. Any point along this pathway where the nerve is compressed, stretched, or irritated can produce the characteristic symptom pattern — pain, tingling, numbness, or weakness radiating into the leg.

The term "sciatica" describes the symptom, not the cause. This is a critical distinction — because the cause determines the treatment, and different causes require fundamentally different approaches.

The Three Most Common Causes of Sciatica

Lumbar disc bulge or herniation: The intervertebral discs that sit between the lumbar vertebrae act as shock absorbers. When a disc bulges or herniates — particularly at the L4-L5 or L5-S1 level — the displaced disc material can press on the adjacent nerve root. This produces a sharp, electric, dermatomal pain pattern down the leg in the distribution of the compressed root. Sitting typically aggravates it. Walking may improve it. Coughing, sneezing, or straining often provokes a sharp increase in symptoms.

Piriformis syndrome: The piriformis muscle sits deep in the buttock and, in a significant proportion of the population, the sciatic nerve passes through or immediately beside it. When the piriformis is tight, overloaded, or in spasm — common in cyclists, runners, desk workers, and people who sit for long periods — it can directly compress the sciatic nerve. The resulting pain pattern mimics disc-related sciatica closely but has a different clinical presentation on assessment. It is frequently misidentified as disc pathology — and the distinction changes the treatment approach entirely.

Sacroiliac joint dysfunction: The sacroiliac (SI) joint — where the sacrum meets the ilium of the pelvis — can become restricted or inflamed and produce pain that radiates into the buttock, hip, and upper thigh. This is often described as sciatica but is technically a referred pain pattern from the joint, not nerve compression. It requires joint mobilisation, not nerve treatment.

Correctly identifying which of these — or which combination — is driving the symptoms is the essential first step. This cannot be determined from symptoms alone. It requires clinical examination.

Why "Rest and Anti-Inflammatories" Is Not a Treatment Plan

Anti-inflammatory medication reduces the inflammatory component of nerve irritation and provides genuine short-term relief. It is a reasonable first response to an acute sciatica episode. But it addresses neither the structural cause of the nerve compression nor the tissue dysfunction maintaining it.

Rest similarly reduces load on the irritated structures temporarily. But lumbar discs, piriformis muscles, and sacroiliac joints do not repair themselves through rest alone. Without specific treatment to restore movement, reduce muscle tension, mobilise restricted joints, and address the biomechanical factors that caused the problem, the same structure is re-provoked at the next physical demand.

This is why so many London professionals cycle through repeated sciatica episodes — each managed with rest and medication, none properly resolved.

Clinical Assessment: What It Reveals That Imaging Often Doesn't

One of the most common situations at Marques Therapy is the client who arrives with an MRI report showing a disc bulge, has been told "that's your sciatica," and has had months of treatment targeting the disc with limited success. Often, assessment reveals that the primary driver of their symptoms is piriformis syndrome — and the disc finding on MRI is incidental, as disc changes are present in a significant proportion of asymptomatic adults over 40.

The clinical assessment performed by Sosthenes Marques combines:

• Neural tension testing to identify whether the sciatic nerve is genuinely under tension and at what level

• Lumbar movement assessment to determine whether disc-related mechanics are involved

• Piriformis-specific provocation tests to differentiate muscular from disc-related compression

• Sacroiliac joint provocation tests to identify SI joint involvement

• Neurological screening to assess motor function, sensation, and reflexes in the lower limb

From this assessment, a clinical diagnosis is formed — not "sciatica" but the specific structural driver and the treatment approach it requires.

Treatment at Marques Therapy for Sciatica

Treatment is tailored to the identified cause:

For disc-related sciatica: Joint mobilisation to restore lumbar segmental movement at the affected level, combined with neural mobilisation techniques — specific movements that gently mobilise the sciatic nerve within its neural canal to reduce tension and improve its tolerance to movement. Sports massage to the lumbar extensors and gluteal muscles to reduce the protective muscle spasm that develops around an irritated nerve root. Rehabilitation exercises to restore disc-supportive core stability.

For piriformis syndrome: Dry needling is the most direct and effective intervention — releasing the piriformis muscle and its trigger points rapidly and specifically. A fine needle inserted precisely into the muscle body produces immediate reduction in resting tone and nerve compression. Combined with sports massage to the deep external hip rotators and hip flexors, and stretching programme guidance, this produces resolution in most cases within 4–6 sessions.

For sacroiliac joint dysfunction: Specific sacroiliac joint mobilisation to restore normal joint mechanics, combined with targeted muscle energy techniques to correct the muscle imbalances maintaining the dysfunction. Gluteal strengthening to stabilise the joint and prevent recurrence.

How Long Does Recovery Take?

For acute sciatica of recent onset (within 6–8 weeks): most clients achieve significant resolution within 4–8 sessions over 4–6 weeks.

For chronic or recurrent sciatica (months to years): 8–12 sessions over 8–10 weeks is typical, with gradual, measurable improvement at each appointment.

The cause matters significantly for prognosis. Piriformis syndrome typically resolves faster than disc-related sciatica. SI joint dysfunction responds well to mobilisation but requires ongoing stability work to prevent recurrence.

Serving Sciatica Clients Across London SE1 and Beyond

Sciatica is one of the most prevalent musculoskeletal conditions in London's working population. Long commutes on the Jubilee or Northern line, hours in forward-flexed desk posture, and the general physical stress of city life create conditions in which the lumbar spine and pelvis are chronically overloaded.

Marques Therapy is located at 88 Southwark Bridge Rd — five minutes from London Bridge and Borough stations — and serves clients from across SE1, Bermondsey, Southwark, Elephant & Castle, Waterloo, the City of London, and Canary Wharf. Home visits are available for clients whose mobility is significantly limited by their sciatica symptoms.

Frequently Asked Questions

Q: Should I have an MRI before seeking treatment for sciatica? A: MRI is valuable when red flag symptoms are present — progressive neurological weakness, bladder or bowel involvement, or pain not responding to any treatment over 6–8 weeks. For most presentations, clinical assessment identifies the cause and informs the treatment plan without the need for imaging. If assessment findings suggest imaging would change the management approach, appropriate referral will be made.

Q: Is sciatica a disc problem? A: Not always. Disc bulge is one cause of sciatic nerve irritation, but piriformis syndrome and sacroiliac dysfunction are equally common and are frequently mistaken for disc pathology. Correct assessment is essential — the treatment for each cause is different.

Q: Can I exercise with sciatica? A: Yes — with appropriate modification. Complete rest is rarely the right approach and often worsens outcomes. Specific movement is part of recovery. Sosthenes Marques will advise on appropriate activity levels and modifications for your specific presentation.

Q: Will I need surgery for sciatica? A: The vast majority of sciatica cases resolve with appropriate conservative management — clinical therapy, exercise, and time. Surgery is reserved for cases with progressive neurological deficit or failure of comprehensive conservative treatment. Surgical referral will be recommended if clinical assessment indicates this is warranted.

Q: How do I book? A: Via WhatsApp: wa.me/+447746252075. Or book online at marquestherapy.com.

Book Your Sciatica Assessment in London SE1

If sciatica is limiting your movement, your work, or your sleep — a proper clinical assessment is the starting point for resolution.

Marques Therapy 88 Southwark Bridge Rd, London SE1 0EX 5 minutes from London Bridge and Borough stations | Near Borough Market Serving SE1, Bermondsey, Southwark, Waterloo, Elephant & Castle, and the City of London

📱 WhatsApp: wa.me/+447746252075 🌐 marquestherapy.com/sports-therapy

Sosthenes Marques — Sports Therapist & MSK Specialist | 20+ years of experience | London SE1