Some of our most recent projects include the following…


What we do

BLL undertakes periodic testing and maintenance of various sites around London and the South East.

Recent projects include:
  • Lewisham hospital
  • North Middlesex hospital
  • Royal Surrey hospital


What we do

BLL undertakes refurbishments and periodic testing for various boroughs, council properties and individual housing developers throughout the UK.

Clients include:
  • Keepmoat
  • St James
  • McAleer & Rushe
  • Admore


What we do

We undertake risk assessments, installation and testing for each school or college we work with.

We work all over London and the South East and have worked in several London boroughs, including: Dulwich, Wandsworth, Croydon, Lewisham, Sutton & Morden.

Our team can work at mutually convenient times and out of hours if necessary.

Aircraft Hangers

What we do

We conduct BSEN installation, static earthing, remedial works and upkeep, out of hours protection and earthing of fencing to RC earthing frameworks.

Our clients include:
  • London Heathrow Airport
  • Biggin Hill Airport
  • Bournemouth Airport


What we do

BLL has extensive experience in lightning protection and maintenance for commercial office space – from minor repairs and remedials to full BSEN 62305 upgrading.


Past clients include Sea Containers House and developers we work with include Ardmore, Hill Partnership, Wandsworth Council and City Deans PLC.

Government Buildings

What we do

BLL undertakes risk assessment, installation and maintenance of flags and fall protection.

We have been closely associated projects at Whitehall and have worked with a number local and central government departments.

Churches and Catherdals

What we do

BLL tests the lightning protection for churches and cathedrals in London and the Southeast and carries out maintenance / restoration works on the roof and general building.

Over a period of 40 years, our operatives have carried out hundreds of projects including remedial work, rebuild, shingling, stainless steel fabrications, clock-house and stained glass and security filming.


What we do

Our skilled and trained team of operatives can work on, replace and repair flag poles on your buildings.

Our team are fully accredited to work on projects for local and central government in London and the South East.

Recent projects include:
  • Senate House, University of London
  • Queen Elizabeth Building, Middle Temple, London
  • Government buildings

About us

We provide the design, installation and maintenance of lightning protection & earthing systems throughout the UK.

Get in Touch

+44(0) 208 776 7231

Drop by

53-55 Jasmine House
Jasmine Grove
London SE20 8JY

© BLL Associates 2020  All rights reserved

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