There were 15 by-elections during April with just 1 (7%) changing hands.
* 4 candidates contesting 3 seats.
The only seat to change hands was North Lincolnshire UA, Humberston & New Waltham which UKIP gained from Conservatives
- swing Conservative to UKIP 11% since 2012 and 16% since 2011
as former Parliamentary candidate wins long standing Conservative seat