This great page has loads of information on kanji which were used for cities and countries which can't be found elsewhere! Index of /www.geocities.jp/iwao_watanabe/kanji Here you can find the kanji for Manchester for example.
As explained 一つの国名にいくつもの表記がある場合があり…ここに表記したものが全てではありません in the site みんなの知識 ちょっと便利帳 外国名・外国地名の漢字表記 linked below, there can be many ways to represent city names in kanji, especially for relatively minor ones. For example, here's other examples for Manchester.