Hi there and welcome to OSM. Just dropping in to make a small comment, Its best practice to limit your changesets to a local area when possible so in this case you would have one changeset for Thurso and another for Portsmouth. There is nothing wrong with what you've done but this just makes it easer for auditing tools to manage.
happy mapping, 
Kits :)
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            Published using OSMCha: https://osmcha.org/changesets/152970716
            