| SL0428 | HANCOX Sian | Waddington All Saints Academy PTFA | 18/11/2025 | 18/11/2025 | indefinite |
| SL0203 | HANGER Elizabeth | Brant Broughton PTA | 27/03/2026 | 16/06/2009 | indefinite |
| SL0238 | HANSFORD Jane | St Andrews Parish Church Cranwell | 15/06/2026 | 12/07/2011 | indefinite |
| SL0433 | HARPER Tracy | Cardiac Risk in the Young | 10/04/2026 | 10/04/2026 | indefinite |
| SL0355 | HARRINGTON Christopher | Heckington PCC | 29/05/2026 | 19/07/2021 | indefinite |
| SL0439 | HAYMAN Sarah J | St Michael's Church | 13/07/2026 | 13/07/2026 | indefinite |
| SL0080 | HOLMES Gynna | Timberland Village Hall Committee | 06/11/2025 | 01/01/2008 | indefinite |
| SL0033 | HOUGH Martin | Eslaforde Park Bowls Club | 29/07/2026 | 13/08/2008 | indefinite |
| SL0139 | HUDSON Michael | Sleaford & North Hykeham Constituency Labour Party | 17/10/2025 | 01/01/2008 | indefinite |
| SL0222 | HURST Martyn | Brant Road Social Club | 16/06/2026 | 23/03/2010 | indefinite |