| Active | 1643 to 1645 |
| Country | England |
| Allegiance | Parliamentarian |
| Conflicts | First Civil War |
| Type | Foot |
| Colonel | Sir John Wittrough |
| Area Raised | Hertfordshire |
| Coat Colour | |
| Flag Colour | |
| Flag Design | |
| Field Armies | Essex 1643 |
| Garrison | |
Parliamentarian Regiment of Foot probably serving at the siege of Reading, then in garrison at Aylesbury
Sometimes referred to as Lt Col Thomas Sadler's regiment as he led it while at Aylesbury.
A list of the regiment’s officers is shown in Laurence Spring’s Regiments of the Eastern Association1)
Led the regiment in Aylesbury