The UK Parliament's Trade and Industry Committee held an inquiry into support provided for the BTC pipeline by the UK's export credit agency, ECGD. It focused on allegations that the companies involved knew about safety problems with the anti-corrosion coating chosen to seal the pipeline's joints before it was buried, but did not disclose them to ECGD. Contrary to previous public and parliamentary assurances, ECGD officials admitted to the inquiry that the coating had not been properly tested and it was being used for the first time.

In March 2011, following a Complaint lodged under the OECD Guidelines for Multinational Enterprises by six environment and human rights groups (including The Corner House) back in April 2003, the UK government ruled that oil multinational BP is breaking international rules governing the human rights responsibilities of multinational companies in its operations on its Caspian oil pipeline.

After the BTC Consortium, led by BP, formally asked the UK's export credit agency, ECGD, for financial support for its BTC oil pipeline project, ECGD's Business Principles Unit (BPU) assessed the potential environmental and social impacts of the project. The BPU's findings and recommendations were critical to ECGD's issuing significant financial guarantees for the project in February 2004.

When The Corner House put in an information request for a copy of the BPU's report, it was refused. Only after appeals and counter appeals was the information finally released in August 2009.

The route of the BTC pipeline from Armenia through Georgia to Turkey passes in or near seven existing conflict zones, including South Ossetia and Armenia. The Corner House raised this issue with the UK’s export credit agency, ECGD, the National Audit Office and the Environmental Audit Committee of the UK Parliament.