Safety improvements in the offshore industry are a "lasting memorial" to the 167 people killed in the Piper Alpha disaster, the Prime Minister has said.
In a letter to Malcolm Webb, chief executive of industry group Oil & Gas UK, David Cameron said:
In this testing environment the highest safety standards are paramount. I know how tirelessly the industry works to prevent incidents like Piper Alpha from ever happening again.
Over the last 25 years the North Sea has embraced continuous improvement in health and safety - an appropriate lasting memorial to those who suffered so terribly a quarter of a century ago.
We will never forget the 167 who lost their lives on 6th July 1988. And my thoughts as Aberdeen remembers its loss are with their families and loved ones, the survivors and all those involved on that tragic night.