Just the one council by-election, in Hertfordshire, to get the 2018 council by-election show on the road.
The ward, Borehamwood Cowley Hill, has not seen a Liberal Democrat in the last seven contests, stretching back to 2007. This time, however, there was a Lib Dem thanks to Paul Robinson. Thank you, Paul.
These by-election results round-ups cover principal authority by-elections. See my post The danger in celebrating parish and town council wins for your own party for the reasons to avoid straying too often into covering town, parish or community council by-elections.