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In the UK you do not have to get the permission from people you photograph whilst they are in a public place. Using and selling images of people in a public place is usually acceptable if undertaken with a view to being used for any journalistic or artistic material.
However if you intend to sell the image commercially or use it for a commercial purpose (for example to promote a product) it is normally recommended to get people to sign a model release form - see below for more about why this is important.
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No necessarily public, quite often private residential buildings or colleges. The latter is probably a minefield with the potential involvement of minors.
No (as long as you [and everyone else] is in a public place).
https://www.blpawards.org/competition/photo-rights
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In the UK you do not have to get the permission from people you photograph whilst they are in a public place. Using and selling images of people in a public place is usually acceptable if undertaken with a view to being used for any journalistic or artistic material.
However if you intend to sell the image commercially or use it for a commercial purpose (for example to promote a product) it is normally recommended to get people to sign a model release form - see below for more about why this is important.
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