High and Low Voltage Engineering
UK-based specialist electrical engineering services firm delivering high voltage (11kV-33kV) and low voltage testing, installation, cable jointing, and managed maintenance services to NHS trusts, manufacturing, commercial, and public infrastructure clients nationwide.
- Company typePrivate
- Founded2010
- HeadquartersBilston, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What High and Low Voltage Engineering does
High and Low Voltage Engineering Ltd (trading as HaLVE Works) is a privately-held UK electrical engineering services company founded in 2010 by Andy Caville and headquartered in Bilston, West Midlands. The company delivers specialist high voltage (11kV-33kV) and low voltage electrical services across four integrated divisions: Electrical Testing & Inspection (Fixed Wire Testing/EICR, PAT Testing, TEV Testing for partial discharge detection, and Emergency Light Testing); High & Low Voltage Services (HV installation and supply, protection grading studies compliant with IEC 60255 and ENA guidelines, and LV equipment supply); Cable & Containment Infrastructure (HV/LV cable jointing and containment system design); and COMA Agreements & Authorised Personnel (multi-year Control, Operation & Maintenance Agreements plus Senior Authorised Person cover). The company's technical differentiators include NICEIC and SSIP certifications, HTM 06-03 compliance for healthcare environments, SAP-authorised personnel capable of HV switching and permit issuance, and diagnostic capabilities such as non-intrusive TEV testing and thermal imaging.
The company serves four primary customer segments: NHS Trusts and private healthcare providers (HTM 06-03 compliant operations, patient-critical power continuity), manufacturing and industrial facilities (switchgear upgrades, transformer maintenance, cable jointing), commercial buildings and office estates (compliance testing and LV upgrades), and utility/public infrastructure including MOD and custodial sites (specialist HV operations). Revenue is generated through three mechanisms: one-time project fees for installation and commissioning work, recurring multi-year COMA managed-service agreements, and reactive 24/7 emergency callout revenue. All services are quote-based with no public pricing, delivered directly by the company's own engineers via phone, website contact forms, and on-site engagement. The company claims nationwide UK coverage with a concentration of case studies across the West Midlands, Birmingham, Manchester, and Aylesbury.
HaLVE Works operates with a team of approximately 23 named individuals including SAPs, APs, CPs, and support staff, and has been bootstrapped since founding with no disclosed external investment, acquisitions, or parent company. The business remains founder-controlled with Andy Caville active as Senior Authorised HV/LV Engineer.
High and Low Voltage Engineering firmographics
Firmographics- Name
- High and Low Voltage Engineering
- Legal name
- High and Low Voltage Engineering Ltd
- Website
- https://halve.org.uk
- Company type
- Private
- Founded year
- 2010
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- UK-based specialist electrical engineering services firm delivering high voltage (11kV-33kV) and low voltage testing, installation, cable jointing, and managed maintenance services to NHS trusts, manufacturing, commercial, and public infrastructure clients nationwide.
- Ownership category
- akta.pro rank
High and Low Voltage Engineering industry classification
Industry- Product category
- Electrical Engineering Services
- NAICS
- Electrical Contractors and Other Wiring Installation Contractors (23821), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)
- SIC
- Electrical Work (1731), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)
- akta.pro primary industry
- Low-Voltage & Security Systems Contracting (Access Control, CCTV, Intrusion) (IMAFALAF)
- akta.pro secondary industries
- Circuit Protection Devices (MCBs, MCCBs, ACBs, fuses, RCD/GFCI, surge protection) (IMAGAEAB), Electrical Testing & Certification (Protection Relays, Switchgear, Transformers) (EUAEAHAG), EMI/Shielding, Grounding & Surge Protection for Cabling Systems (HDAFALAL)
Keywords
Where High and Low Voltage Engineering is headquartered
LocationHeadquarters
- HQ city
- Bilston
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
High and Low Voltage Engineering business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Electrical Testing & Inspection Services: Charged per project or contract for Fixed Wire Testing (EICR), PAT Testing, TEV Testing, and Emergency Light Testing. Delivered by NICEIC-certified engineers nationwide.
- HV & LV Installation and Equipment Supply: One-time project fees for the design, supply, installation, and commissioning of high and low voltage equipment including switchgear, transformers, cable installations, and distribution panels.
- COMA Agreements (Control, Operation & Maintenance Agreements): Recurring contractual agreements covering ongoing control, operation, and maintenance of HV/LV electrical systems. Include 24/7 emergency response, planned preventative maintenance, oil sampling, TEV testing, and compliance documentation.
- 24/7 Emergency Callout Service: Reactive emergency response service available around the clock for critical power failures and safety concerns. Accessed via phone (option 4), generating revenue from urgent, time-sensitive interventions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Quote-based project pricing |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
High and Low Voltage Engineering product offering
Product offeringCore offering
High and Low Voltage Engineering Ltd (trading as HaLVE Works) is a UK-based electrical engineering services company that designs, installs, tests, inspects, and maintains high voltage (11kV–33kV) and low voltage electrical systems. The company delivers four core service lines — Electrical Testing & Inspection, High & Low Voltage Services, Cable & Containment Infrastructure, and COMA Agreements & Authorised Personnel — to NHS trusts, manufacturing plants, commercial estates, and utility sites across the UK, with 24/7 emergency callout response.
Product overview
High and Low Voltage Engineering Ltd (HaLVE Works) is an electrical engineering services company providing a comprehensive portfolio of services for high and low voltage electrical infrastructure across the UK. The company operates as a unified service offering organized into four core service divisions: Electrical Testing & Inspection (encompassing Fixed Wire Testing, PAT Testing Services, TEV Testing, and Emergency Light Testing); High & Low Voltage Services (including HV Installation and Supply, High Voltage Protection Grading, and LV Equipment Supply); Cable & Containment Infrastructure (covering HV & LV Cable Jointing Services and Containment systems); and COMA Agreements & Authorised Personnel (including COMA Agreements and Senior Authorised Persons services). These services are delivered through a team of qualified engineers with 24/7 emergency support capabilities, serving sectors including NHS trusts, healthcare, manufacturing, commercial facilities, and industrial operations.
Differentiator
Problem solved
Functional benefit
Products and services
- Electrical Testing & Inspection Comprehensive electrical testing and inspection services including Fixed Wire Testing (EICR), PAT Testing, TEV (Transient Earth Voltage) Testing for partial discharge detection, and Emergency Light Testing, delivered by NICEIC-certified engineers to ensure safety and regulatory compliance across commercial, industrial, and healthcare facilities.
- High & Low Voltage Services Design, installation, and maintenance of high voltage (HV, 11kV–33kV) and low voltage (LV) electrical systems, including HV installation and supply, high voltage protection grading studies compliant with IEC 60255 and ENA guidelines, and supply/installation of LV equipment such as distribution panels and switchgear for hospitals, industrial facilities, and commercial properties.
- Cable & Containment Infrastructure Expert cable jointing and containment solutions including HV (11kV–33kV) and LV cable jointing, termination, fault finding, repairs, testing and commissioning, alongside design and installation of cable containment systems (cable trays, ladder racks, trunking, conduits, basket systems) for construction, utilities, and industrial projects.
- COMA Agreements & Authorised Personnel Bespoke Control, Operation & Maintenance Agreements (COMA) providing 24/7 emergency response, planned preventative maintenance, transformer oil sampling, TEV testing, and Senior Authorised Person (SAP) cover for HV systems in high-dependency environments such as hospitals and industrial plants.
- 24/7 Emergency Callout Service Round-the-clock reactive emergency response service for critical power failures and electrical safety concerns, accessible via dedicated phone line (option 4) with dedicated engineers on call 24 hours a day.
Quantifiable outcome
- 24/7 emergency response available for critical power failures
- +2 more outcomes
Companies that use High and Low Voltage Engineering
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
High and Low Voltage Engineering technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
High and Low Voltage Engineering partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered minor.
- Comfort Cases UKminorHaLVE Works is a Silver Partner of Comfort Cases UK, a charity that provides brand-new comfort cases and XL duffel bags to children entering or moving within the care system. HaLVE's partnership involves charitable giving and community support rather than commercial collaboration.
- Avonside Safety ManagementminorAvonside Safety Management delivers training courses for HaLVE engineers, including SHEA Power (online safety course) and the HV1 - 11kV Triplex End Termination Course. HaLVE engineers attend these training programmes to maintain and develop their technical competencies.
Scale indicators3 records
Recent moves5 records
Expansion highlights4 records
High and Low Voltage Engineering competitors and assessment
Company assessmentDirect peers
- SPIE UK: European multi-technical services provider delivering electrical installation, HV/LV maintenance, and facility management across UK sites. Directly comparable in HV/LV contracting and COMA-style maintenance offerings.
- Balfour Beatty Engineering Services: Major UK infrastructure contractor with electrical installation and maintenance capabilities, including healthcare and industrial HV/LV projects. Overlaps significantly in services and target segments at larger scale.
- NG Bailey: UK's largest independent engineering and services business with dedicated HV/LV electrical contracting and maintenance offerings for industrial, commercial, and healthcare clients. Directly comparable in core scope but operates at materially larger scale.
- MJ Quinn Integrated Services: UK mechanical and electrical contractor delivering HV/LV installation, testing, and maintenance for commercial and industrial clients. Closely comparable mid-market peer in services and customer profile.
- Amey: UK infrastructure services provider offering electrical maintenance, testing, and HV/LV support within facility management contracts. Comparable in COMA-style recurring maintenance and NHS/public-sector exposure.
Broad incumbents
- ABB UK: Global electrification and automation company with UK presence in HV switchgear, transformers, and electrical service contracts. Comparable in HV equipment expertise but as a much larger portfolio player.
- Schneider Electric UK: Global energy management and automation giant with significant UK HV/LV equipment, switchgear, and services presence. Adjacent competitor for switchgear supply and HV services but operates across the full electrical value chain.
- Siemens UK: Global technology company with UK operations in power distribution, switchgear, and electrical infrastructure services. Overlaps with HV installation, protection grading, and substation work but at vastly larger scale.
- Eaton UK: Global power management company with UK operations spanning LV switchgear, power distribution, and electrical services. Adjacent in LV equipment supply and electrical contracting services.
Emerging players
- Carter Synergy Electrical Contractors: UK-based electrical contractor offering HV/LV installations, testing, and maintenance to industrial and commercial clients. Similar mid-market positioning and service portfolio to HaLVE.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
High and Low Voltage Engineering social profiles
Digital presenceHigh and Low Voltage Engineering financial estimates
Financial estimateRevenue estimate
Valuation estimate
High and Low Voltage Engineering leadership team
Management profileNumber of profiles
Profiles5 records
High and Low Voltage Engineering funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
High and Low Voltage Engineering M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about High and Low Voltage Engineering
What does High and Low Voltage Engineering do?
High and Low Voltage Engineering Ltd (trading as HaLVE Works) is a UK-based electrical engineering services company that designs, installs, tests, inspects, and maintains high voltage (11kV–33kV) and low voltage electrical systems. The company delivers four core service lines — Electrical Testing & Inspection, High & Low Voltage Services, Cable & Containment Infrastructure, and COMA Agreements & Authorised Personnel — to NHS trusts, manufacturing plants, commercial estates, and utility sites across the UK, with 24/7 emergency callout response.
Is High and Low Voltage Engineering a public or private company?
High and Low Voltage Engineering is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was High and Low Voltage Engineering founded?
High and Low Voltage Engineering was founded in 2010. It employs 11 to 50 people.
Where is High and Low Voltage Engineering based?
High and Low Voltage Engineering is headquartered in Bilston, United Kingdom, in the Europe region.
How does High and Low Voltage Engineering make money?
Four revenue lines are on record. Electrical Testing & Inspection Services are the primary driver. The others are HV & LV Installation and Equipment Supply, COMA Agreements (Control, Operation & Maintenance Agreements) and 24/7 Emergency Callout Service.
Who are High and Low Voltage Engineering's main competitors?
Direct peers on record are SPIE UK, Balfour Beatty Engineering Services, NG Bailey, MJ Quinn Integrated Services and Amey. Broad incumbents are ABB UK, Schneider Electric UK, Siemens UK and Eaton UK. Carter Synergy Electrical Contractors is listed as an emerging player.
Does High and Low Voltage Engineering have an API?
No public API is recorded for High and Low Voltage Engineering.
What industry is High and Low Voltage Engineering in?
High and Low Voltage Engineering's product category is Electrical Engineering Services. Its primary akta.pro industry code is IMAFALAF, Low-Voltage & Security Systems Contracting (Access Control, CCTV, Intrusion), with a secondary code of IMAGAEAB, Circuit Protection Devices (MCBs, MCCBs, ACBs, fuses, RCD/GFCI, surge protection). Its NAICS code is 23821 and its SIC code is 1731.