ExplodingCabbage
Pretty sure the correct name is Canal Mews. I can't find any source supporting the alleged "Waterside Mews" name and the government-sourced (OS & Local Highway Authority) data in Geoplace says this street, USRN 6000482, is called Canal Mews.

(Various sources, including OSM as of today, seem to think that either The Wharf, part of The Wharf, or one of the buildings on The Wharf is (also) called "Waterside Mews", which puzzles me because I can't find any street or building signs corroborating that and Geoplace doesn't think any such street exists. But no source I can find seems to think *this* street has ever been called Waterside Mews. Speculation: maybe it was a name briefly used in marketing the new development here before the developers realised it conflicted with a name previously used on The Wharf and changed the name? @bght might have seen those marketing materials at the time, explaining his comment in 2017?)