In pictures | The best images from September

Dutch heavy lifting company Mammoet worked with tunnel boring machine (TBM) manufacturer Herrenknecht and HS2 tunnels main contractor, Skanska Costain Strabag joint venture, to design and assemble a custom gantry system to lift four TBMs weighing almost 900 tonnes each.

This solution enabled the removal of each of the TBMs as a single piece and reduced dismantling operations within the shaft by bringing lift operations to the surface, mitigating risk. The total works needed four 24-hour lift and carry operations.

Fire protection company Ark and Bowmer + Kirkland rolled out high-visibility jackets across their sites featuring messages to help raise awareness of mental health issues in construction.

The initiative aims to highlight the importance of creating open conversations around mental health and serves as a visual reminder of the challenges everyone, including construction workers, can face.

Blenheim Palace has launched an extensive seven-week restoration programme of works on the 18th-century clock tower located at the entrance to the UNESCO World Heritage Site‘s Great Courtyard.

The clock is considered the finest surviving example of the craftsmanship of renowned clockmaker Langley Bradley. The movement, dated 1710, was made just a year after Bradley completed his masterpiece at St Paul’s Cathedral and includes several distinctive features known to have appeared in the St Paul’s clock, such as finely turned corner posts and fleur-de-lys motifs on various train bars.

The project is being led by Chris Monaghan, clerk of works in the Blenheim Palace built heritage team, and Carmen Alvarez, Blenheim Palace’s collections manager.

Construction consultancy Gleeds marked its 150th anniversary teaming up with kite surfer Jake Scrace and stuntman Chey Anich to set a new Guinness World Record.

The extreme sports pros reached almost 500m over The Needles at the Isle of Wight to claim the accolade for ‘Highest Kite Surf Tow-up’ ever recorded. Scrace, a carpenter who specialises in building ‘tiny homes’, had previously made headlines by kite surfing over both Worthing and Brighton piers.

Bridge inspectors used skilled rope access techniques to conduct a detailed survey of the Grade II-listed Rochester Old Bridge.

Rope access specialist company Up and Under and sister company CAN Structures, both part of the RSK Group, carried out the inspections as part of a six-year contract with the Rochester Bridge Trust to monitor its assets.

Willmott Dixon Interiors completed a £12.3m refurbishment of the National Maritime Museum’s Ocean Court in Greenwich, London, with an extensive upgrade to its iconic glazed roof.

The project included installing more than 2,550 sq m of solar-protective glazing and Barrisol membrane, resolving long-standing issues with water ingress, solar heat gain and acoustic performance at the Grade I listed building.

The works also involved enhancements to the underfloor heating and cooling system, ventilation, lighting and electrical services.