A 12-day stand-off between Greenpeace and BP that has delayed the journey of drilling rig Paul B Loyd Jr to the Vorlich oilfield in the North Sea has ended.

The environmental group said on Thursday its activists had brought their action against the Transocean-owned rig to a close, adding it would mark this with a series of new protests to highlight fears over climate change targeting BP offices in Europe and the US.

Activists climbed aboard one of the semi-submersible's legs on 9 June as it was preparing to leave the Cromarty Firth, Scotland, delaying its departure for six days.