There are three species of Goose or Stalked barnacle in the images; they include Lepas hilli, Lepas pectinata and Lepas anatifera.
Images of the following species of Gooseneck barancles can be found on this site -
Images of these pelagic barnacles were taken on the high tide mark at Long Rock, Penzance, Cornwall; 03.11.10 and 18.11.10. Strong south-westerly winds had washed ashore a large plastic lid that the animals were attached to, 15 days later a buoy was found, which also had three species of these barnacles.
This is a tropical / sub-tropical species that comes to the UK shores on flotsam via the Gulf Stream. UK waters are too cold for these species to survive and breed.