SRL Sound Research Laboratories Sudbury
Sound Research Laboratories a trading name of SRL Technical ServicesSudbury, Suffolk
Sound Research Laboratories, a trading name of SRL Technical Services Ltd, operates the Holbrook House acoustic laboratory. Current UKAS 0444 issue 039 assigns the selected laboratory methods to location A. Five groups summarise local acoustic testing, with customer-site methods kept separate. The UKAS address uses CO10 0TH while the owner footer uses CO10 0TF, so confirm the delivery postcode.
Reviewed by Arc · About this review
Key facts
- Exact laboratory and postcode qualification
- UKAS identifies Holbrook House, Little Waldingfield, Sudbury, Suffolk CO10 0TH as location A. The owner publishes the same named premises with CO10 0TF. The guide retains the exact UKAS location and records this discrepancy, with delivery details to confirm.
- Current register and dated scope
- The current register lists Sound Research Laboratories a trading name of SRL Technical Services as Testing Laboratories 0444. The downloaded ISO/IEC 17025:2017 schedule is issue 039 dated 19 May 2025. A laboratory rows and Site customer-premises rows are distinct.
- Published customer enquiry and preparation support
- The owner publishes 01787 247595, info@srltsl.com and an enquiry form. It describes installation support, onsite sample storage, forklift access and pre-test visits. Exact sample handling, availability and report timing need agreement.
Testing capabilities
Building-element sound insulation and improvement
A laboratory rows cover airborne sound insulation of walls, doors, windows, glazing, small technical elements, shutters and other building elements. They also cover floor airborne/impact insulation, improvements from wall/floor linings and floor coverings, and suspended-ceiling sound insulation. Use the specified BS EN ISO 10140:2021 parts/annexes, BS EN ISO 717:2020 ratings and BS EN 10848-2:2017 row. Withdrawn ISO 140 predecessors and their frequency conditions remain separate.
Sound absorption and rainfall noise
Exact A scope includes reverberation-room absorption coefficient for plane absorbers or equivalent absorption area for discrete objects, using BS EN ISO 354:2003 and BS EN ISO 11654:1997. It also includes rainfall-generated sound from roofs, roof/ceiling systems, roof windows and skylights under BS EN ISO 140-18:2006 and BS EN ISO 10140-3:2021. Each row has its own published frequency condition.
Ducted silencers and attenuators
The A schedule lists static insertion loss, total pressure loss and regenerated noise of ducted silencers/attenuators under BS EN ISO 7235:2009. Its third- or full-octave 100 to 5000 Hz condition is tied to that row. This does not establish a general HVAC capacity, apparatus count or all owner-advertised airflow services as accredited.
Road and rail noise barriers
A laboratory methods measure sound absorption and sound insulation of road traffic barriers under BS EN 1793-1:2017 and -2:2018. Rail barriers use BS EN 16272-1:2023, -2:2023 and -3-1:2023 for the listed acoustic properties and single-figure ratings from a specified noise spectrum. Separate withdrawn 2012 rows are not substituted for these editions.
Noise emissions from specified outdoor equipment
The schedule allocates A and Site to environmental noise-emission testing for the specified statutory equipment item classes, including hydraulic/rope-operated excavators, dozers, loaders and excavator-loaders. It lists EN ISO 3744:2010 with Directive 2000/14/EC and 2005/88/EC and the specified UK statutory instruments. Confirm the exact equipment class and location. This is not unrestricted machinery-noise or mechanical vibration testing.
Equipment and published limits
| Specification | Published value | Conditions |
|---|---|---|
| Rainfall noise frequency condition | 100 Hz to 5 kHz in third-octave bands | Exact A roofs/roof-ceiling systems/roof windows/skylights rainfall row on page 4, under the listed ISO 140-18:2006 and ISO 10140-3:2021 methods. This is a method condition, not a chamber dimension or a shared acoustic-system capacity. |
| Reverberation-room absorption frequency condition | Minimum frequency range 100 to 5000 Hz | Exact A absorption coefficient/equivalent-area row on page 4. BS EN ISO 354:2003 and BS EN ISO 11654:1997 are listed, with withdrawn predecessors separately marked. No room volume, specimen maximum or apparatus count is supplied by this row. |
| Ducted-silencer measurement condition | 100 to 5000 Hz in third- or full-octave bands | Exact A page 6 row lists static insertion loss, total pressure loss and regenerated noise under BS EN ISO 7235:2009. Keep this condition attached to the row, without inferring airflow/pressure maximum or combining it with other acoustic limits. |
| Owner-described booking and handling facilities | Installation support, exclusive booking use, onsite storage and forklift access | The owner describes fitters/fabricators or the customer’s own suppliers, exclusive use of the booked laboratory, sample storage, forklift access and customer viewing/conference facilities. These are qualitative arrangements to confirm, without storage totals, equipment counts, numerical test throughput or accreditation for every advertised service. |
Access and contact
Use 01787 247595, info@srltsl.com or the official enquiry form to discuss the exact item, method and booking. The owner offers installation support or use of preferred suppliers, sample storage, forklift access and new-customer visits. Confirm delivery address because exact UKAS A uses CO10 0TH and the owner footer uses CO10 0TF. Agree dimensions, mounting, test programme and reporting. Mr A Smalls and srl@srltsl.com are contacts in issue 039 dated 19 May 2025, without an independently verified present role. Owner report timing is variable and requires confirmation.
Facility contact
- Address
- Holbrook House, Little Waldingfield
Sudbury, Suffolk, CO10 0TH
United Kingdom - info@srltsl.com
- Telephone
- 01787 247595
- Website
- Official test house website
Standards and accreditation
- UKAS 0444 exact A and separate Site scope
- The current register and ISO/IEC 17025:2017 schedule 0444, issue 039 dated 19 May 2025, identify the full trading name and Holbrook House A location. Suitable customer premises are separately coded Site. Page 1 uses Sound Research Laboratories and later headers add Ltd, while the register supplies the exact current trading identity. The wording variation is retained without a guessed legal-entity change.
- Building acoustics and absorption methods
- Selected A rows use BS EN ISO 10140-1:2021 annexes A to I as specified, -2:2021 and -3:2021, BS EN ISO 717-1:2020 and -2:2020, BS EN 10848-2:2017, BS EN ISO 140-18:2006, BS EN ISO 354:2003 and BS EN ISO 11654:1997. Specific annexes and withdrawn legacy rows remain separate, with no band transferred from withdrawn ISO 140-3 airborne methods to modern ISO 10140 rows.
- Silencers, barriers and specified machinery methods
- Selected rows list BS EN ISO 7235:2009, BS EN 1793-1:2017 and -2:2018, BS EN 16272-1:2023, -2:2023 and -3-1:2023, and EN ISO 3744:2010 for the stated machinery classes. These examples retain location, material, edition and method restrictions, rather than all methods in each standard.
- Owner advertising and away-site field methods
- The owner’s broad UKAS/bespoke acoustic wording is qualified by the exact 0444 rows. Customer-site field airborne/impact methods, Building Regulations and BB93 remain separate from local laboratory measurements. Site room-volume thresholds and 50 Hz bands are not local laboratory dimensions or bands. Wider consultancy, thermal calculations, air permeability and environmental declarations are not transferred to these accredited acoustic groups.
What to confirm with the facility
- Confirm the exact item, mounting, method/edition, current A or Site allocation and reporting requirements. Modern and withdrawn methods are distinct. Specified outdoor-equipment classes do not establish blanket machinery, vibration or other owner-advertised environmental scope.
- Keep rainfall, absorption and ducted-silencer frequency conditions separate. The withdrawn airborne minimum 100 to 3150 Hz and Site room-volume-specific 50/100 Hz bands do not transfer to modern laboratory rows. Published methods do not establish combined limits, apparatus counts, chamber volumes or simultaneous maximum capability.
- Confirm delivery postcode, sample handling, installation, booking availability and reporting. Exact UKAS A CO10 0TH differs from owner CO10 0TF. Owner storage/exclusivity and usually ten working days for full reports are descriptions to agree, not service guarantees. Named schedule contacts are dated, without independent current-role verification.
- Provide the project, item and dimensions, construction, mounting, requested method/edition, test parameters, acceptance criteria, report requirements and dates. Agree preparation, delivery, access, programme and costs with the provider.
Before requesting a test
Public information not available. Contact test facility provider for more information.
Frequently asked questions
How many tests can be completed during a booking?
The owner says this depends on the test type, sample complexity, testing standards and installation time. SRL advises the number individually, so agree the programme rather than assume a fixed throughput.
When should test samples be delivered?
The owner suggests a few days before testing, earlier for samples sent from outside the UK, and describes free secure onsite storage. Confirm current storage and delivery arrangements, including the CO10 0TH versus CO10 0TF postcode discrepancy.
Can customers visit before testing?
The owner encourages new customers to visit, meet the team and discuss requirements. Arrange the visit through the published contact route and confirm availability.
When are test results and reports available?
The owner says timing varies, provisional results are often available in real time and full reports are usually delivered within ten working days. Confirm the required report date for the specific programme, as this is owner-described timing without a guarantee.
Related testing facilities
Public information not available. Contact test facility provider for more information.
Further reading
Public information not available. Contact test facility provider for more information.
Sources and review
Reviewed by Arc on 1 October 2026 in Europe/London using five fresh official owner/register/schedule captures. Current UKAS 0444 and six fully viewed pages of issue 039 dated 19 May 2025 verify Holbrook House, Little Waldingfield, Sudbury CO10 0TH as A, with suitable customer premises separately coded Site. Owner footer uses CO10 0TF for the same named premises, expressly recorded as a delivery postcode discrepancy without a guessed correction. Five concise selected acoustic groups cover building-element insulation/improvement, absorption/rainfall, ducted silencers, road/rail barriers and specified outdoor-equipment noise with A/Site restrictions. Method-specific rainfall, absorption and silencer frequency conditions remain distinct from withdrawn airborne bands and Site room-volume conditions, without inferred apparatus counts, dimensions, combined capacity or simultaneous maximum. Owner installation support, exclusive booking use, storage/forklift/customer facilities and four visible FAQs are source-qualified, with advance delivery, individually estimated test counts, pre-test visits and usually ten working days for reports to confirm. Current general 01787 247595/info email and enquiry form remain distinct from dated Mr A Smalls/srl email in issue 039, without a present-role claim. Wider thermal/air-permeability/environmental/consultancy advertising does not extend exact acoustic accreditation. Original bodies, headers, titles, canonicals, WebPage/article metadata and absent time elements, raw PDF title/creation/modification dates, complete page images, extraction/render/font configuration/stderr and older discovery originals are retained. Schedule issue, metadata and retrieval dates remain separate from actual review. Complete directory overrides clear imported coordinates.
Arc publishes this directory entry and does not operate the test facility. Suggest a correction to Arc with a supporting source.
SRL: Acoustics, Air Quality, Environmental Monitoring, Testing
Owner identifies SRL and local Holbrook House footer, with broader consultancy/air quality/noise/vibration/monitoring advertising. Its CO10 0TF postcode differs from exact UKAS A CO10 0TH and remains qualified. Neither broader environmental work nor corporate history establishes accredited local mechanical vibration or climate testing.
Acoustic Testing / Acoustic Test Lab - SRL Technical Services
Owner lists acoustic laboratories, installation support, exclusive booking use, onsite storage, forklift access, visits and customer viewing rooms. Four selected FAQs retain source-qualified delivery, count, visit and report timing. Current 0444 schedule controls exact acoustic accreditation, without thermal/air-permeability or blanket owner-scope transfer.
Contact us - SRL Technical Services
Owner publishes 01787 247595, info@srltsl.com and an enquiry form. Same Holbrook House/Little Waldingfield/Sudbury premises footer uses CO10 0TF, explicitly distinct from exact schedule/register CO10 0TH. No message submitted and no delivery postcode guessed.
Search UKAS accredited organisations
Exact full trading identity Testing Laboratories 0444 at Holbrook House, Little Waldingfield, Sudbury, Suffolk CO10 0TH and 01787 247595. Other results excluded and protected email not guessed. Template dates do not date the accreditation decision.
UKAS schedule 0444, Sound Research Laboratories, issue 039
0444 issue 039 dated 19 May 2025, exact Holbrook House A with separate Site activities at suitable customer premises. Six complete PDF pages actually inspected. Current and withdrawn acoustic methods remain distinct, with frequency bands tied to individual rows, no apparatus count, chamber dimension or combined maximum. Mr A Smalls and srl@srltsl.com are dated schedule contacts without independent present-role verification.