Hearing aids are remarkable devices, but even the most advanced models have limitations — particularly in acoustically challenging environments such as lecture theatres, places of worship, cinemas, railway stations, and busy service counters. Background noise, reverberation, and distance from the sound source can all degrade the signal that reaches a hearing aid microphone, leaving the wearer struggling to follow conversations, announcements, or performances. Assistive listening technology bridges this gap by delivering sound directly to the listener’s ears, bypassing the problematic acoustics of the room. For the estimated 12 million adults in the UK who experience some form of hearing loss, these technologies are not a luxury — they are often the difference between participation and exclusion.
What Are Hearing Loops and How Do They Work?
The hearing loop — also known as an induction loop or audio frequency induction loop (AFIL) — is the most widely installed assistive listening system in the UK and across much of Europe. The technology dates back to the 1930s but remains remarkably effective. A hearing loop consists of a wire installed around the perimeter of a room, counter, or seating area. An amplifier drives an audio signal through this wire — sourced from a microphone, PA system, television, or other audio device — creating an electromagnetic field within the looped area.
This electromagnetic field is picked up by a telecoil (T-coil), a small copper coil built into most hearing aids and cochlear implants. When the hearing aid is switched to its telecoil programme (usually marked “T” or “MT” on the device), it receives the electromagnetic signal directly and converts it into sound. The result is a clean, clear audio signal delivered straight to the listener’s ear, free from background noise, room echo, and the distortion that comes with distance from a speaker. For the wearer, it can feel as though the speaker or performer is talking directly into their ear.
There are several types of hearing loop installation. Perimeter loops run a single wire around the edge of a room and are suitable for theatres, churches, and meeting rooms. Low-spill loops use a figure-of-eight or phased array design to contain the magnetic field within a defined area, preventing signal leakage into adjacent rooms — essential in cinemas with multiple screens. Counter loops are compact systems installed at service desks, ticket offices, and reception areas, typically with a small pad placed on the counter surface. The international hearing loop symbol — a blue ear with the letter “T” — indicates that a loop system is available and operational.
Telecoils: The Hidden Feature in Your Hearing Aid
The telecoil is one of the most underused features in modern hearing aids. Most behind-the-ear (BTE) hearing aids provided by the NHS include a telecoil, as do many privately purchased models. However, surveys by the Hearing Link charity have found that a significant proportion of hearing aid users are either unaware that their device has a telecoil or have never been shown how to activate it. This represents a missed opportunity: a telecoil costs manufacturers very little to include, adds no bulk to the device, and provides access to hearing loop systems in thousands of public venues across the UK.
To use your telecoil, you simply switch your hearing aid to the “T” programme. On some devices this is done via a button on the aid itself; on others it can be selected through a smartphone app. The “MT” setting, available on many aids, allows you to hear both the loop signal and the hearing aid microphone simultaneously — useful in situations where you want to follow a looped audio source while remaining aware of your immediate surroundings. If your telecoil is not already activated, your audiologist can enable it and adjust its sensitivity during a routine hearing aid aftercare appointment. For a deeper explanation of how telecoils interact with loop systems, see our guide to telecoils and hearing loops.
It is worth noting that many smaller receiver-in-canal (RIC) and completely-in-canal (CIC) hearing aids do not include a telecoil due to size constraints. If you are choosing new hearing aids and plan to use loop systems regularly, make sure to discuss telecoil availability with your audiologist during the hearing aid fitting process.
The Equality Act 2010 and Your Legal Rights
Under the Equality Act 2010, service providers in England, Scotland, and Wales have a legal duty to make “reasonable adjustments” to ensure that disabled people — including those with hearing loss — are not placed at a substantial disadvantage when accessing services. The provision of assistive listening technology, particularly hearing loops, is widely considered a reasonable adjustment for venues and service providers that deal with the public.
In practice, this means that banks, post offices, GP surgeries, hospitals, pharmacies, railway station ticket counters, local authority offices, theatres, cinemas, courts, and places of worship should have functioning hearing loop systems at public-facing counters and in main auditoriums. The reality, however, is mixed. While many large organisations have invested in loop systems, maintenance is often neglected. Hearing Link and the charity Action on Hearing Loss (now part of the RNID) have conducted “mystery shopper” surveys revealing that a substantial number of installed loops are either switched off, broken, or producing a signal too weak to be useful. If you encounter a non-functioning loop, you have the right to raise the issue with the venue — and their obligations under the Equality Act mean they should address it.
In Northern Ireland, similar duties exist under the Disability Discrimination Act 1995 (as amended). The principle is the same: service providers must take reasonable steps to remove barriers for people with disabilities.
FM Systems, Roger Technology, and Radio Aids
While hearing loops are ideal for fixed venues, they are less practical in dynamic or outdoor environments. FM (frequency modulation) systems and their modern successor, Roger technology from Sonova (Phonak), use radio signals to transmit audio from a microphone worn by the speaker directly to a receiver connected to the listener’s hearing aid. The speaker wears or holds a small transmitter — often clipped to a lapel or placed on a table — and the listener wears a receiver that can connect to their hearing aid via a direct audio input, a neckloop, or an integrated Roger receiver.
Roger systems are widely used in education, with many local authorities providing them to children with hearing loss through their Sensory Support Services. They are also popular in workplace settings, one-to-one meetings, and outdoor environments where a hearing loop would be impractical. The Roger Select, Roger On, and Roger Table Mic are popular models that can pick up speech from multiple speakers in a meeting or classroom setting. Prices for Roger systems are significant — transmitters and receivers together can cost £1,000–£3,000 — but they are available through the NHS for children and, in some cases, for adults with severe or profound hearing loss. Your audiologist can advise on eligibility and referral pathways.
Infrared (IR) systems are another alternative, used primarily in theatres, cinemas, and courtrooms. IR systems transmit audio via invisible light signals to a personal receiver worn by the listener. The advantage of infrared is that the signal does not pass through walls, making it ideal for environments where confidentiality is important or where multiple adjacent rooms need independent audio channels. The disadvantage is that the listener must have a clear line of sight to the transmitter, and the systems do not work outdoors in direct sunlight.
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Find appointments →Bluetooth LE Audio and Auracast: The Future of Public Audio
The most significant development in assistive listening technology in decades is Bluetooth LE Audio and its broadcast feature, Auracast. Ratified as part of the Bluetooth 5.2 specification, LE Audio introduces a new audio codec (LC3) that delivers higher quality sound at lower power consumption than classic Bluetooth. More importantly for hearing aid users, the Auracast broadcast feature allows a single audio source to transmit to an unlimited number of receivers simultaneously — functioning, in effect, like a digital hearing loop without the need for installed wiring.
A venue equipped with an Auracast transmitter can broadcast its audio feed to any compatible hearing aid, cochlear implant, or pair of earbuds within range. The listener simply selects the broadcast from a list on their hearing aid app — much like connecting to a Wi-Fi network. Early trials in the UK have been promising: several cinema chains, the National Theatre, and Transport for London have explored Auracast pilots. The technology is expected to complement rather than replace traditional hearing loops in the short term, but as the installed base of LE Audio-compatible hearing aids grows, Auracast has the potential to become the dominant public assistive listening standard.
For hearing aid users considering new devices, it is worth asking your audiologist whether a particular model supports Bluetooth LE Audio. Our guide to hearing aid Bluetooth and apps covers the current landscape in detail. Not all hearing aids marketed as “Bluetooth” support the newer LE Audio standard — many still use Bluetooth Classic, which does not support Auracast broadcasts.
Technology for the Home: TV Streamers, Amplified Phones, and Alerting Devices
Assistive technology is not limited to public venues. A range of devices can significantly improve quality of life at home, addressing the everyday challenges that hearing aid users commonly face.
TV streamers are among the most popular home accessories for hearing aid users. A small transmitter connects to your television (typically via optical audio or HDMI ARC) and sends the audio signal directly to your hearing aids via Bluetooth. This allows you to listen at a comfortable volume through your hearing aids while the television speaker remains at a level comfortable for other family members — or muted entirely. Most major hearing aid manufacturers offer their own branded TV streamers, including Phonak TV Connector, Oticon ConnectClip, and Signia StreamLine TV. Prices range from £150 to £300.
Amplified telephones and mobile accessories are designed for people with hearing loss. Amplified corded and cordless phones from manufacturers such as Geemarc and BT feature adjustable volume boost (up to 50 dB above standard), tone control to emphasise frequencies where hearing is weakest, and extra-loud ringers with visual flashing alerts. For mobile phones, many modern hearing aids connect directly via Bluetooth for hands-free calling, streaming the caller’s voice directly to both ears.
Alerting devices address one of the most important safety concerns for people with hearing loss: the ability to hear critical sounds in the home. These systems use flashing lights, vibrating pads (placed under a pillow or cushion), or extra-loud signals to alert the user to doorbells, smoke and carbon monoxide alarms, alarm clocks, baby monitors, and telephone calls. Alerting systems can be obtained through the NHS Environmental Aids Service, through local authority social services departments, or purchased from specialist retailers such as Connevans, Sarabec, and Action on Hearing Loss (RNID) shops. The NHS hearing services guide explains the referral process in more detail.
Smartphone Apps and Captioning Services
The smartphone has become one of the most powerful assistive listening tools available, and most of its capabilities are free. Live captioning features built into Android (Live Caption) and iOS (Live Captions) can transcribe speech in real time — from phone calls, videos, podcasts, and even in-person conversations. Google’s Live Transcribe app is particularly effective for face-to-face situations: you place your phone on the table and it displays a rolling transcript of the conversation, supporting over 80 languages.
Sound classification apps such as Apple’s Sound Recognition (built into iOS) can listen for specific sounds — doorbells, smoke alarms, dogs barking, babies crying, water running — and send a notification to your phone or Apple Watch when they are detected. This provides an additional layer of safety awareness for people who may not hear these sounds through their hearing aids.
For television, the UK’s major broadcasters provide subtitles on virtually all scheduled programming via Ceefax/digital text services. Streaming platforms including BBC iPlayer, ITV Hub, Channel 4, Netflix, and Amazon Prime Video offer closed captions on most content. The quality and accuracy of automated captions have improved dramatically in recent years, though live programming — particularly sports and news — can still produce errors.
STAGETEXT is a UK charity that provides captioning for live performances at theatres, concerts, and events. Captions are displayed on screens beside the stage, allowing hearing-impaired audience members to follow dialogue and lyrics. Their website lists upcoming captioned performances across the UK. Similarly, many cinemas offer captioned screenings — check your local cinema’s accessibility page or ask at the box office.
Getting Assistive Devices Through the NHS
The NHS provides a range of assistive listening devices free of charge to eligible patients, though availability varies by region. Through your local audiology department, you may be able to access:
- Hearing loops for home use — portable loop systems that connect to your television or telephone
- Radio aids and FM systems — particularly for children in education, but also available to some adults with severe hearing loss
- Alerting devices — smoke alarm alerts, doorbell flashers, and vibrating alarm clocks, usually provided through the NHS Environmental Aids Service or local social services
- Amplified telephones — available in some areas through audiology departments or social services
To access these services, you will typically need a referral from your GP or audiologist. The process usually begins with a hearing test to assess the nature and severity of your hearing loss, followed by a needs assessment to determine which devices would be most beneficial. Your audiologist can also advise on privately available technology that may complement your NHS provision — for example, Bluetooth-enabled TV streamers or smartphone-compatible hearing aid accessories.
If you are not sure where to start, booking a hearing assessment is the best first step. Audiologists at providers such as Specsavers Audiology and Boots Hearingcare can assess your hearing, discuss your specific challenges, and recommend both NHS and private assistive listening solutions tailored to your lifestyle. You can also explore our guide to understanding your audiogram to make sense of your test results and what they mean for technology choices.
Assistive listening technology has never been more capable, more affordable, or more widely available. Whether you need help hearing the television, following a conversation across a busy restaurant table, or catching every word at the theatre, there is almost certainly a solution that can help. The key is knowing what exists, understanding your rights, and asking the right questions of your audiologist. Your hearing aids are the foundation — assistive technology is what builds the complete picture.