Mediterranean Shag - Juvenile???????????

Hi

Recently back from lovely Cornwall, lots of interesting birds to be seen and to add to my list. I am quite new to this and haven't really got a clue over identification! My friend is very knowledgeable and thought the bird was a Mediterranean Shag but a juvenile.

Be great for some experts to view.

https://youtu.be/EziT9tzVf38

Sorry for the quality, was on my phone in a storm, zoomed right in. Even for me I thought its feet looked strange!