Open Short Course Records – Female
| Distance | Stroke | Time | Date | Swimmer | Competition |
| 50 | Free | 27.69 | 05-Dec-14 | Emily Jelfs | ASA East Region Winter Championships |
| 100 | Free | 59.35 | 06-Nov-15 | Lois Moore | ASA East Region Winter Championships |
| 200 | Free | 2:07.06 | 19-Nov-16 | Alice Fender | Guildford Winter Championships |
| 400 | Free | 4:31.28 | 05-Nov-16 | Alice Fender | East Swimming Short Course Championships |
| 800 | Free | 9:17.50 | 04-Dec-16 | Alice Fender | HHSC Club Championships |
| 50 | Back | 31.09 | 28-Feb-15 | Lois Moore | Hertfordshire County Championships |
| 100 | Back | 1:07.02 | 28-Feb-15 | Aimee Abrey | Hertfordshire County Championships |
| 200 | Back | 2:27.44 | 17-Jan-15 | Aimee Abrey | Hoddesdon SC County Qualifier Open Meet |
| 50 | Breast | 34.70 | 17-Oct-15 | Grace Rayner | HHSC Birthday Open |
| 100 | Breast | 1:14.94 | 14-Nov-15 | Grace Rayner | Arena League |
| 200 | Breast | 2:43.78 | 19-Sep-15 | Grace Rayner | HHSC Club Championships |
| 50 | Fly | 30.22 | 19-Sep-15 | Lois Moore | HHSC Club Championships |
| 100 | Fly | 1:06.69 | 10-Oct-15 | Lois Moore | Arena League |
| 200 | Fly | 2:34.97 | 19-Sep-15 | Lois Moore | HHSC Club Championships |
| 100 | IM | 1:09.10 | 27-Jun-15 | Grace Rayner | Terry Davies Alternate Nationals, Watford |
| 200 | IM | 2:26.49 | 14-Nov-15 | Grace Rayner | Arena League |
| 400 | IM | 5:15.97 | 13-Nov-16 | Alice Fender | HHSC Club Championships |
Open Short Course Records – Male
| Distance | Stroke | Time | Date | Swimmer | Competition |
| 50 | Free | 23.83 | 05-Nov-16 | Jack Spence | East Swimming Short Course Championships |
| 100 | Free | 52.04 | 14-Nov-15 | Jack Spence | Arena League |
| 200 | Free | 1:57.92 | 28-Feb-15 | Tom Sherriff | Hertfordshire County Championships |
| 400 | Free | 4:11.02 | 28-Feb-15 | Tom Sherriff | Hertfordshire County Championships |
| 1500 | Free | 16:42.06 | 2006 | Bill Woodhouse | Unknown |
| 50 | Back | 27.11 | 25-Jun-16 | Jack Spence | Terry Davies Alternative Nationals |
| 100 | Back | 58.32 | 25-Jun-16 | Jack Spence | Terry Davies Alternative Nationals |
| 200 | Back | 2:05.37 | 12-Mar-16 | Jack Spence | Watford Regional Qualifier |
| 50 | Breast | 30.08 | 15-Jul-17 | Jack Christie | Luton Fast and Furious |
| 100 | Breast | 1:06.41 | 27-Oct-17 | Jack Christie | Swim England Masters Championships 2017 |
| 200 | Breast | 2:29.34 | 27-Oct-17 | Jack Christie | Swim England Masters Championships 2017 |
| 50 | Fly | 26.54 | 05-Dec-14 | Justin Langford | ASA East Winter Championships |
| 100 | Fly | 58.09 | 29-Jun-14 | Justin Langford | HHSC Club Championships |
| 200 | Fly | 2:14.70 | 11-Apr-09 | Tommy Sheldrick | Watford 1st Easter Open Meet |
| 100 | IM | 1:00.75 | 20-Jun-17 | Jack Christie | HHSC Club Championships |
| 200 | IM | 2:12.03 | 21-Nov-15 | Jack Spence | Watford County Qualifier |
| 400 | IM | 4:49.47 | 28-Feb-15 | Tom Sherriff | Hertfordshire County Championships |
Open Long Course Records – Female
| Distance | Stroke | Time | Date | Swimmer | Competition |
| 50 | Free | 28.23 | 05-May-18 | Shona McKenna | SE East Region Swimming Long Course Championships |
| 100 | Free | 1:00.43 | 02-May 17 | Alice Fender | East Swimming Long Course Championships |
| 200 | Free | 2:09.00 | 02-May-17 | Alice Fender | East Swimming Long Course Championships |
| 400 | Free | 4:38.20 | 26-Mar-17 | Alice Fender | Guildford Springboard |
| 800 | Free | 9.33.60 | 26-Mar-17 | Alice Fender | Guildford Springboard |
| 50 | Back | 32.45 | 11-April-15 | Lois Moore | Team Luton April Meet |
| 100 | Back | 1:10.11 | 02-May-15 | Aimee Abrey | ASA East Region Championships |
| 200 | Back | 2:33.27 | 02-May-15 | Aimee Abrey | ASA East Region Championships |
| 50 | Breast | 35.95 | 02-May-15 | Grace Rayner | ASA East Region Championships |
| 100 | Breast | 1:18.75 | 02-May-15 | Grace Rayner | ASA East Region Championships |
| 200 | Breast | 2:51.68 | 02-May-15 | Grace Rayner | ASA East Region Championships |
| 50 | Fly | 31.83 | 02-May-15 | Lauren Windsor | ASA East Region Championships |
| 100 | Fly | 1:10.47 | 30-Mar-13 | Megan Pirrie | Welsh Nationals |
| 200 | Fly | 2:37.72 | 30-Mar-13 | Megan Pirrie | Welsh Nationals |
| 200 | IM | 2:34.47 | 05-Jul-17 | Alice Fender | 69th FISEC Games, Italy |
| 400 | IM | 5:31.22 | 30-Apr-16 | Alice Fender | ASA East Region Championships |
Open Long Course Records – Male
| Distance | Stroke | Time | Date | Swimmer | Competition |
| 50 | Free | 25.11 | 26-Mar-17 | Jack Christie | Guildford Springboard |
| 100 | Free | 54:21 | 11-April-15 | Tom Sherriff | Team Luton April Meet |
| 200 | Free | 1:59.89 | 02-May-15 | Tom Sherriff | ASA East Region Championships |
| 400 | Free | 4:17.42 | 02-May-15 | Tom Sherriff | ASA East Region Championships |
| 1500 | Free | 17:22.74 | 1-Mar-14 | Tom Sherriff | Hertfordshire County Championships |
| 50 | Back | 28.56 | 30-Apr-16 | Jack Spence | ASA East Region Championships |
| 100 | Back | 1:01.35 | 30-Apr-16 | Jack Spence | ASA East Region Championships |
| 200 | Back | 2:17.89 | 02-May-17 | Josh Gaines | East Swimming Long Course Championships |
| 50 | Breast | 30.95 | 02-May-17 | Jack Christie | East Swimming Long Course Championships |
| 100 | Breast | 1:10.67 | 02-May-17 | Jack Christie | East Swimming Long Course Championships |
| 200 | Breast | 2:35.81 | 02-May-15 | Charlie Rayner | ASA East Region Championships |
| 50 | Fly | 26.83 | 02-May-15 | Justin Langford | ASA East Region Championships |
| 100 | Fly | 59.97 | 02-May-15 | Tom Sherriff | ASA East Region Championships |
| 200 | Fly | 2:24.91 | 02-May-17 | Sam Gaines | East Swimming Long Course Championships |
| 200 | IM | 2:18.52 | 30-Apr-16 | Josh Gaines | ASA East Region Championships |
| 400 | IM | 5:10.57 | 05-May-18 | Mattias Morse | SE East Region Long Course Championships |
Records correct as of 31-05-18
Age group records can be viewed here – Password Required.
Any queries related to Club records should be sent to records@hhsc.org.uk