Goose ID, please

I saw a skein of these geese this morning here in Lincolnshire, about 25 of them flying in a shallow V. I presumed they were Greylag, but these were silent whereas Greylag are usually making a racket. I just wondered if they may be Pink-Footed or something else. My apologies for the quality of the photo - heavily cropped, I'm afraid. Thanks.