Established in 1975, Topbond PLC combines technically innovative project management expertise with traditional skills and values to offer a range of specialist services to the construction and marine industries. Operating from its Head Office in Kent and satellite office in Suffolk, Topbond PLC offer a multidisciplinary global service managed by expert project teams delivering exceptional innovation to complex challenges. With over 40 years of civil engineering experience, Topbond offers a nationwide structural repair and refurbishment service for buildings, bridges, and other structures.
Their services include concrete repairs, cathodic protection, carbon fibre strengthening, flood alleviation schemes, post-tensioned bridge removal, parapet upgrades, bridge refurbishment, VRS schemes, steelwork repairs, bearing replacements, masonry repairs, and infrastructure works. Topbond also provides marine services to clients in the Port, Renewable Energy, and Civil Engineering sectors, undertaking installation, repair, and refurbishment of marine and waterway structures. Their specialist footbridge division, Intaspan, offers a complete design and build service.
Additionally, HTS undertakes structural investigation and testing services, with many services being UKAS accredited.
Topbond have a long history of concrete repairs, having worked across the UK on a whole range of reinforced concrete structures, ranging from live LNG tanks to historic listed structures. In-house experience and expertise allow Topbond to assist in the selection of suitable repair types and materials as well as completing the works with our own teams of repairers. Experience includes sprayed concrete, hand placed repairs, crack repairs, fairing coats and aesthetical repairs, protective coatings, and inspections and testing before repair works commence.
Orient House cathodic protection
Cathodic Protection is used to control the rate of corrosion in reinforced concrete structures thereby prolonging their service life. A retrofitted Impressed Current Cathodic Protection system can also be installed to protect the steel frames of masonry clad buildings from corrosion. Corrosion of the steel frames can result in cracking and spalling of the masonry cladding, a process known as 'Regent Street Disease'. Topbond are seen installing a Transformer Rectifier as part of the refurbishment of a system on a Grade II listed building.
Tenterton Subway carbon fibre strengthening
The capacity of structures built from a variety of different materials, can be increased using Carbon Fibre strengthening. On a pedestrian subway the reinforced concrete walls were exposed, and grit blasted before a series of high performance carbon fibre plates (which were coated with epoxy resin adhesive) were applied to the walls. Topbond were awarded an historic bridge award for their strengthening work of the cast iron Tickford Bridge.
Broadmoor Prison platipus ground anchors
Topbond are approved installers of Platipus anchors and have a wealth of experience spanning back to over 20 years. Topbond can deliver any sized anchor scheme, from domestic repair schemes through to highways support works on both hand and machine installed anchors. Topbond work hand-in-hand with Platipus to help design and deliver the schemes seamlessly.
Kingsmoor flood alleviation scheme
Topbond have extensive experience with flood alleviation from ECI to Design and Build. Our team have successfully protected our regions over decades and take pride in safeguarding the local communities. Recent experiences include earthworks, sea walls, upgraded and increased capacity drainage systems.
Kingston Bridge post-tensioned bridge removal
Topbond have experience in most types of post-tensioned bridge works, notably the removal of a 130t post-tensioned footbridge. Topbond provided specialist design and construction services for the removal of the footbridge over a major ring road in Kingston. The bridge was cut into sections and removed over 1 night, alongside a live rail bridge.
Darenth Interchange parapet upgrade
Topbond have carried out a number of parapet upgrades where the existing structure requires modification/upgrading to cater for the new design loads. In this instance the verge cantilever also needed to be upgraded at each post location with an RC rib to the underside of the cantilever verge.
Marlow Bridge refurbishment
The Topbond team work closely with our clients to present innovative and efficient bridge refurbishment solutions. We understand the importance of expanding the longevity of structures and minimizing future maintenance operations. Every structure comes with its own individual challenges but whether on land, on water, rural or urban we have a proven track record for success.
Marks Tey VRS scheme
Topbond has extensive experience in the design and construction of highway vehicle restraint systems. This example illustrates a system that was built on a road over mainline railway bridge. Our bespoke temporary fencing system safeguarded the travelling public and our staff during construction.
Dunton Bridge steelwork repair
Group-wide structural experience and in-house capabilities make steel repairs a core part of our business. Topbond operate across multiple highway frameworks which demand planned and reactive steel repairs. Recent works include bridge strikes, bridge strengthening, anti-suicide protection measures and bespoke temporary works.
Lodge Avenue bearing replacement
Bearings are used to provide a connection point between both the fixed and moving parts of structures. Bearings come in many forms but are critical to allow for movement, expansion and contraction of structures and transfer of dead and live loads. Worn or damaged bearings can cause major damage to structures up to and including total failure resulting in dangerous operating conditions. The above photo shows a new high level bearing fitted to Lodge Avenue flyover on the A13, part of ongoing maintenance carried out by Topbond for RMS 13.
Red Bridge masonry repairs
Topbond carry out numerous repairs to brick arch bridges, generally required due to poor construction/modification methods, inadequate maintenance, impact damage, tree root damage, water ingress, brick face/mortar erosion and scour, principal inspection failure. The project depicted here included all the above requiring a full reconstruction of the failing wingwall, Pilaster, arch face, spandrel, parapet, concrete fill to abutment, waterproofing and road construction.
Questions about Topbond PLC from the record on this page
What does Topbond PLC do?
Topbond PLC: specialist services in construction and marine industries including refurbishment of bridges and structures, marine services, footbridge design and build, survey and testing. Their listed services include Civil engineering, Refurbishment, Marine & water engineering, Design & build and Restoration & heritage.
Where is Topbond PLC based?
Topbond PLC is registered at Oyster Quay, Castle Road, Sittingbourne, ME10 3EU, in South East.
What areas does Topbond PLC cover?
Topbond PLC states that it works across Nationwide.
How many people work at Topbond PLC?
Accounts filed for the year to 2025 report 57 employees, which places the company in the 50-249 employees band.
What is Topbond PLC's turnover?
Topbond PLC reported turnover of £19.5m in accounts filed for the year to 2025.
Is Topbond PLC still trading?
Companies House lists Topbond PLC as active, with accounts most recently made up to 2025-03-31.
What accreditations does Topbond PLC hold?
Topbond PLC displays ISO Accredited and UKAS accredited on its website.
What sectors does Topbond PLC work in?
Topbond PLC works in Infrastructure, Commercial, Industrial and Energy.
When was Topbond PLC established?
Topbond PLC was incorporated on 1975-03-18.
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