| Air Equipment | Air compressor repair service | Station Garage, 12 Kings Rd | Mon–Fri 08:00–17:00 |
| Airpower UK Ltd | Air compressor supplier | 5 Kings Rd | Mon–Fri 08:30–17:00 |
| Baycroft Flitwick Care Home | Assisted living residence | 101 Ampthill Rd | Fri–Sat Open 24 hours |
| Birch Builds | Kitchen renovator | 39 Durham Cl | Mon–Tue 06:00–19:30 |
| BoothBarmy | Party equipment rental service | Russell Centre, Coniston Rd | Daily Open 24 hours |
| Cerisport | Pilates studio | 65-67 Station Rd | Fri 08:00–17:00 |
| Country Vehicles Flitwick Ltd | Tyre shop | Maulden Road Industrial Estate, 3 Enterprise Way | Mon–Fri 08:30–17:30 |
| Cycleworx Flitwick | Bicycle shop | 22 Brookes Rd | Tue–Wed 09:30–16:30 |
| Drawers N Doors | Kitchen supply shop | 12 Windmill Rd | Mon–Tue 09:00–17:00 |
| Flitwick and Ampthill Bathrooms | Bathroom supply shop | Unit 6, 12 Windmill Rd | Mon–Fri 09:00–17:00 |
| Flitwick Community Football Centre | Football club | Flitwick Football Centre, Ampthill Rd | Sat 08:30–18:00 |
| Flitwick Motorcycles | Motor scooter dealer | Station Rd | Tue 08:30–18:00 |
| Flitwick Mowers Ltd | Lawn mower shop | 7 Lyall Court | Tue–Thu 09:00–17:00 |
| Ideal Eyewear Ltd | Optometrist | 110 The Hawthorns | Tue–Fri 09:00–17:00 |
| Morgan de Vere Wills & Trusts LLP | Estate planning lawyer | The Rufus Centre, Steppingley Rd | Mon–Thu 09:00–17:00 |
| MVS | Computer networking service | 1 The Croft | Mon–Fri 09:00–17:00 |
| Olive Naturally Indian Flitwick Branch | Modern Indian restaurant | 8 High St | Mon–Thu 17:30–23:00 |
| Peak Dental & Cosmetic Centre | Dentist | 9 Station Square | Mon–Tue 09:00–17:00 |
| Pearl of Bengal | Bengali restaurant | 2A Station Rd | Mon–Fri 17:30–23:00 |
| Prestige Design & Workwear Flitwick | Uniform shop | 46, 48 High St | Mon–Tue 09:00–17:00 |
| Reiki Sounds | Reiki therapist | 9 Tennyson Rd | Daily 09:00–17:00 |
| Teng Tools UK | Tool shop | Flitwick Industrial Estate, Unit 5 Maulden Rd | Mon–Fri 08:00–17:00 |
| The Chicken House | Chicken shop | 4 Steppingley Rd | Tue 12:00–22:00 |
| UK Camera Store | Camera shop | 4 Station Rd | Fri 10:00–15:00 |
| VHS2DVD Flitwick | Video duplication service | 15 Pilgrims Cl | Mon–Sat 10:00–17:00 |
| Vigilant PLC | Computer software shop | 3 Commerce Way | Mon–Fri Open 24 hours |
| Domino's Pizza - Flitwick | Pizza delivery | 17, russell centre, Coniston Rd | Mon–Tue 11:00–23:00 |
| Jewson Flitwick | Building materials supplier | Maulden Road Industrial Estate, Enterprise Way | Mon–Fri 07:00–17:00 |
| Johnsons The Cleaners | Dry cleaner | 2 Steppingley Rd | Mon–Sat 09:00–17:30 |
| Tesco Mobile | Mobile phone shop | Coniston Rd | Mon–Sat 09:00–19:00 |