Chinese Church in London features a nicely stylized form of the Chinese word 華 (huá), which means "China" or "Chinese" in most contexts. Here, a "cross" (or Star of Bethlehem) motif is incorporated into the center of the character.
Pinyin romanization scheme for Chinese. Each sound in Mandarin is assigned a corresponding Roman letter. Most of the words chosen are simple, everyday ideas or objects: 大 (dà) = big, large; 土 (tǔ) = earth, dust. I'm confused by the image for for 你 (nǐ) - I always thought it just mean "you."
St. Dunstan in the West is a church that caters to the demographics of its congregation in a variety of ways. Here, an entrance sign asks visitors to pray for peace (in English, French, German, Russian, Greek, and Romanian). Although the church is Anglican, I noticed many (Greek and Romanian) Orthodox icons and motifs inside. The praying hands are, I suppose, German in origin, after Betende Hände by Albrecht Dürer (c. 1508).
All Hallows by the Tower isn't one of London's most famous churches but it's worth a visit (check out the crypt and the brass rubbing center). Some notable people associated with the church include William Penn (baptized here, 1644) John Quincy Adams (married here, 1797), and Thomas More (beheaded near here, 1535).