Darren Crannis

Darren Crannis – Founder & Managing Director

Meet CTS Electrical owner and founder Darren Crannis, a Master of Electronic & Electrical Engineering and graduated from Loughborough University in 2004.  Darren worked as an Electronic & Electrical Engineer and a Test Engineer in the Electrical & Communications sector for various high-tech companies such as Allied Telesis & Motorola before becoming an Engineering Consultant in Information Technology to various Electro-Technical companies delivering projects in the South of England.

With over 15 years experience in designing, project managing and delivering electronic, electrical & technical projects up to £100k in value, Crannis Technology Services Ltd was formed, employing only certified engineers & electricians who are not only trained to the highest standards, but can think outside the box – therefore having one clear vision – to expertly design, plan & deliver Electrical & Technical projects to clients to the highest possible standards.



Darren is proud and passionate Member of the Insitute of Engineering & Technology (MIET) & Electrical Contractors Association (ECA) who represent the best in electrical engineering and building services, and as such represents the ECA Swindon Branch & ECA members as Local Chairman, Regional Executive, National Council & is a proud member of ECA Technical Commmittee.

Ceri Crannis

Ceri Crannis – Contacts Manager


Ceri Crannis is CTS Electrical’s Contract Manager. With a carer in Design & Technology, Ceri has a keen eye for detail and a wealth of experence in planning & delivery of technical projects.

Ceri is responsible for planning & delivering the Telecommunications Inspection & Testing and Remedial programme of works for CTS Electrical and looks after our Telecomms Clients & Inspection & Testing Contractors across the South of England.

With at least one CTS Electrical electrician carrying out an Inspection & Test of a facility each day, Ceri insures that the team as well managed, well organised and a strict programme of works is adhered to so all projects are delivered on time and on budget.



CTS Electrical specalise in Telecommunication, Industrial / Commercial & School installations, and carry out Electrical Installation & Inspection works to Local Schools, Colleges & Businesses & National Telecom Companies throughout the South of England.

Your electrical installation will be in our safe hands, we employ a pasionate specalist team and have the expertise to complete your electrical project to the highest standards.

CTS Electrical Services Values:

  • Knowlege
  • Quality
  • Passion
  • Dedication

CTS Electrical Commitment to Industry:

  • CHAS SSIP Approved – Safe Schemes In Procurement – a Safe Contractor
  • Certified City & Guilds Level 3 Electricians
  • JIB Company
  • JIB Gold Card Electricians and Electrical Contractors
  • IET BS7671:2018 qualified (18th Edition of the Electrical Installation Regulations)
  • Inspection & Testing (Initial Verification & Periodic Inspections) Electricians qualified to C&G 2391
  • Electric Vehicle ChargePoint Electricians qualified to C&G 2919
  • Temporary Electrical Installation competent to BS7909
  • Domestic Part-P Approved Contractors – ELECSA (Membership No. EPP37501)
  • Commercial & Indutrial Approved Contractors – ECA (Membership No. 1670746)
  • Approved ECS Electricians, Maintainance Electricians & Advanced Datacomms Specialists
  • DBS / CRB Enhanced Checked Employees & Sub-Contractors
  • iPAF accredited Mobile Elevated Work Platform (MEWP) Trained with Harness Training.