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Sleep medicine · London

Positional therapy for OSA - London.

A drug-free, mask-free option for positional-only obstructive sleep apnoea - fitted by a London sleep physician, confirmed with a repeat home sleep study, and reviewed at 3 months.

A stethoscope on a clinical desk

Indicative pricing

What private positional therapy costs in London.

Indicative ranges across UK London sleep units.

In short

A fitted positional device with London specialist review: £370–£1,130, worn from night one.

Service or device Indicative range
Sleep physician consultation and eligibility check £150–£280
Night Shift Sleep Positioner (neck-worn) + fitting £220–£320
NightBalance Sleep Position Trainer (Philips) £450–£850
Sleep Symphony chest strap £120–£220
Tennis-ball or foam-in-shirt DIY method Free
Repeat home sleep study wearing the device £280–£550

Prices vary by London sleep unit, by which device is fitted, and by whether a repeat home sleep study is included in the package.

What positional OSA is

Obstructive sleep apnoea that is largely a supine problem.

When gravity closes an airway that stays open on the side, position becomes therapy. Roughly half of mild to moderate OSA is position-dependent.

  • AHI typically doubles supine

    On a diagnostic sleep study, patients with positional OSA show an AHI at least twice as high sleeping on their back as they do sleeping on their side.

  • About half of mild-moderate OSA

    Around 50 percent of patients with mild to moderate OSA meet criteria for positional-dependent OSA - it is common, and often under-recognised.

  • Restoring lateral sleep can normalise AHI

    For true positional OSA, spending the night on the side rather than supine can bring the AHI back into the normal range without a mask.

Who benefits

When positional therapy is the right step - and when it is not.

The classic candidates for positional therapy, plus the sleep-study patterns that mean CPAP, a mandibular device or Inspire is the better call.

  • Positional-only mild OSA

    AHI 5–14 with almost all events supine and a lateral AHI under 5. Positional therapy alone can normalise the study.

  • Positional-dominant moderate OSA

    AHI 15–29 with a supine AHI at least twice the lateral AHI. Often responds well as a first-line, drug-free option.

  • CPAP-refusing or CPAP-intolerant patients

    A discreet, drug-free alternative when a mask is not tolerated and the sleep study shows a clear positional pattern.

  • Adjunct to CPAP or a mandibular device

    Adding positional therapy can lower residual AHI, reduce required CPAP pressure and improve overall comfort.

  • Snoring only when on your back

    Loud, disruptive snoring supine that vanishes on the side. A common presentation in partners and one that responds quickly.

  • Post-bariatric or post-weight-loss OSA

    Residual mild OSA after weight loss that becomes purely positional. Positional therapy can be enough to close the gap.

  • Travel and shift-work friendly

    A pocket-sized device that packs into a wash bag. Useful for frequent flyers and shift workers who cannot travel with CPAP.

  • Red flag: severe or non-positional OSA

    AHI over 30, significant desaturations or events across all positions need CPAP or Inspire, not a positional device.

Devices available

Positional therapy is a family of devices - not one product.

What each option actually feels like at 3am - and which fits which sleep pattern. For non-positional or severe OSA, CPAP, MAD or Inspire are the usual alternatives.

  • Night Shift Sleep Positioner

    A soft neck-worn device that vibrates gently when you roll onto your back. Companion app tracks position, adherence and snoring by night.

  • NightBalance Sleep Position Trainer

    A Philips chest-worn device with an escalating vibration cue. The best evidence base of any positional device for moderate OSA.

  • Sleep Symphony chest strap

    A budget-friendly chest strap that vibrates in the supine position. A reasonable step up from the tennis-ball shirt for the price.

  • Tennis-ball or foam-in-shirt shirt

    A historical DIY method: a tennis ball or foam wedge sewn into the back of a tight sleep shirt. Uncomfortable enough to stop supine sleep.

  • Supine-alarm smartwatch apps

    Free or low-cost apps for Garmin, Fitbit and Apple Watch that pulse or buzz when you roll supine. Less accurate than a dedicated device.

  • Wedge pillows and body pillows

    A full-length body pillow or a 30-degree wedge helps some people hold a lateral position, but does not actively cue you when you roll.

  • Combination with CPAP or MAD

    A positional device worn alongside CPAP or a mandibular advancement device can lower residual AHI and reduce required pressure.

  • Second-opinion sleep review

    A specialist review of your sleep study and current therapy - sometimes the answer is a device swap, not another purchase.

Not suitable, and safety notes

What to expect - and when to look elsewhere.

Positional therapy is safe and gentle. It is not the answer for severe OSA, central sleep apnoea, non-positional OSA, or anyone who cannot maintain a lateral posture.

  • Nightly wear for the first month

    The learning effect needs consistency. Wear the device every night for the first four weeks - patchy use trains nothing.

  • Skin marks and mild discomfort

    A red mark under the neck or chest strap is common in week one and settles as the fit is tuned. Not a reason to abandon therapy.

  • Partner disturbance is minimal

    Vibration is silent to your partner and gentle enough that you rarely wake. Most partners notice only that the snoring has stopped.

  • Confirm with a repeat sleep study

    Do not assume it works. A home sleep test wearing the device shows whether AHI has dropped below 5 or 15 and whether supine time has fallen.

  • Not for central sleep apnoea

    Central events are not helped by position and can rise on some devices. A proper sleep-study interpretation matters before you buy.

  • Restless legs and inability to lie lateral

    If restless legs, hip pain or shoulder pain prevent you sleeping on your side, positional therapy will not be tolerated.

  • Weight change resets the equation

    Significant weight gain can turn positional OSA into non-positional OSA. A repeat study is sensible after any 10 percent change.

  • Travel and battery life

    Most devices run 2–3 nights per USB charge. Pack the charger, and remember airline security recognises the device as an ordinary consumer wearable.

  • Red flags after starting therapy

    New morning headaches, worsening daytime sleepiness, choking arousals or ankle swelling - contact the sleep clinic rather than persevering.

Titration and confirmation

Your positional-therapy report in four parts. Read the last one first.

After the four-week learning window, a repeat home sleep test worn with the device shows whether AHI has fallen below 5 or 15, depending on the target agreed with your sleep physician. App-based tracking of body position runs alongside.

A London sleep physician reviewing a positional-therapy on-device sleep study

A quiet reminder

Sleep-study language is precise and can read coldly - it is fine to ask for plain English.

It is reasonable to ask your clinician to talk you through the report before your review.

  1. 01 Header

    Total AHI, supine AHI and lateral AHI

    The three numbers that decide whether positional therapy is worth trying. Look for supine AHI at least twice the lateral.

  2. 02 Technique

    Device, threshold and adherence period

    Which device was fitted, what vibration threshold was set, and the four-week nightly wear window agreed with the clinician.

  3. 03 Findings

    On-device sleep study numbers

    Repeat study wearing the device: new AHI, new supine time percentage, ODI, oxygen nadir and any residual events.

  4. 04 Impression

    Response category and next step

    Read this first: full response (AHI under 5), partial response (AHI under 15), or non-response with a plan to add CPAP or MAD.

Recognised by major UK insurers

BupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealix

Cover for positional therapy varies by insurer - the consultation and repeat sleep study are usually funded, the device sometimes.

Frequently asked

Common questions about positional therapy.

Quick answers on wear time, insurance, repeat testing, partner disturbance, CPAP combination and travel.

  • How many hours a night do I need to wear the device?

    Every hour you are asleep, for at least the first four weeks. Adherence under 4 hours per night trains almost nothing, whereas 6 or 7 hours a night for a month typically produces a durable side-sleeping habit and the best AHI response on the repeat study.

  • Will my private medical insurance cover positional therapy?

    Cover varies. Bupa, AXA and Vitality often fund the sleep physician consultation and the confirmatory sleep study when OSA is medically indicated, but reimbursement for the device itself is patchy - some insurers cover NightBalance, others treat all positional devices as consumer wearables.

  • Do I really need a repeat sleep study once I start wearing it?

    Yes. A device that lowers supine time on the app is not the same as a device that lowers your AHI below the treatment threshold. A home sleep test worn with the device, usually at 6 to 8 weeks, is the only way to prove the therapy is working and to decide whether it is enough on its own.

  • Will it disturb my partner?

    Almost never. The vibration is silent, contained to the device and gentle enough that most partners never notice it. What they do notice is that the snoring stops as soon as you roll off your back - which for many couples is the reason positional therapy was tried in the first place.

  • Can I use positional therapy alongside CPAP?

    Yes, and it can be a useful combination. A positional device worn with CPAP often lowers the pressure the machine needs, reduces mask leaks that are worse supine, and can bring residual AHI down further. Discuss the combined settings with your sleep physician rather than adjusting CPAP yourself.

  • Can I take the device on a plane?

    Yes. Night Shift, NightBalance and chest-strap devices are treated as ordinary consumer wearables by airline security, run for 2 to 3 nights on a single USB charge, and weigh well under 100 grams. Pack the charger in your carry-on and you can maintain therapy through long trips and time-zone changes.

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