A company linked with Lagan Construction Group - which put four of its firms into administration earlier this year - has completed a £2.7m contract in England.
FK Lowry Piling has delivered ground engineering work at Carnwath Road in south west London.
It was awarded the contract by a joint venture of BAM Nuttall, Morgan Sindall and Balfour Beatty.
The joint venture is building the west section of the Thames Tideway Tunnel.
David Brown, section manager for the Carnwath Road Riverside site, said: "FK Lowry completed technically challenging works on a very constrained site, safely and to a high standard.
"They're a thoroughly professional company who produce high quality work."
Niall McGill, FK Lowry Piling director, said the Carnwath Road work had been part of one of the most prestigious civil engineering projects in the UK in recent times.
"We at FK Lowry Piling continue to deliver on the Thames Tideway Tunnel Project with award of repeat business on the Hammersmith Pumping Station and Dormay Street projects."
The announcement comes as administrators for Lagan Construction Group reached a deal to resume work on the new Ulster University campus in Belfast.
Earlier this year, administrators were appointed to Lagan Construction Group Ltd, Lagan Construction Group Holdings Ltd, Lagan Building Contractors Ltd and Lagan Water Ltd.
Announcing the administration, Lagan Construction Group chairman Michael Lagan said problems with contracts, thought to include the Ulster University project, had led to the decision to appoint administrators.