JS Electrical are a Hertfordshire based electrical company with over 15 years’ experience. There are 2 directors in the partnership, Jamie Cornwell and Steven Valle and they are both fully qualified with City & Guilds accreditations and the company is NICEIC and part p registered.


At JS Electrical customer satisfaction and safety is their priority. They offer a wide range of services domestic and commercial a few are listed below:


  • Fuse board upgrades
  • Extensions
  • Shop refurbs
  • Full rewires/New builds
  • Extra power points
  • Security lights
  • Fault finding And much more, no job is too small for us.


JS Electrical value all of their customers and provide an outstanding service and workmanship at very competitive rates. Please do not hesitate to get in touch with them for any more information and For more pictures and reviews of their work please see their Facebook / Instagram page.

JS Electrical are a Hertfordshire based electrical company with over 15 years’ experience. There are 2 directors in the partnership, Jamie Cornwell and Steven Valle and they are both fully qualified with City & Guilds accreditations and the company is NICEIC and part p registered.

"The view from a roof window is Endless"​

As Quoted by Phil Vallé

At PMV Maintenance we have Over 25 Years Dedicated VELUX, Dakea and Roto roof window Experience

specialising IN REPAIRING, renovating, RE-GLAZING and replacing  Roof windows and skylights. 14/11/2018

covering; London, essex, MIDDLESEX, hertfordshire, bedfordshire, Cambridgeshire and beyond.

PMV Maintenance - VELUX and Roto roof window / Skylight repair, replacement, installation, re-glazing, servicing, maintenance, Blinds, Leaks, repairs, Glass, renovation specialists covering London, Hertfordshire, Bedfordshire, Cambridgeshire, Essex, South London, North London and Central London.