Are the two pictures of the bird on the ground of the same bird? To me the bill colour is different, on the first (left hand) picture it appears very pink, in fact quite light and in the next picture it appears orange. The flight pic rules out Greylag with the lack of lightness in the wings etc as mentioned above. Bean Goose and Pink-footed can be ruled out by the lack of darkness near the base of the bill in a juvenile bird which this is and the bird is too big and has no eye ring so Lesser White-front can be dismissed. This leaves juvenile White-fronted Goose but which race. The most likely in terms of distribution would be albifrons but the colour of the bill is not clear in my opinion.