Best 2/3/4-thread overlockers UK
Six overlockers that do 2-thread rolled hems and flatlock as well as 3/4-thread seams, priced at Sewing Machine World on 1 November 2026. Our general overlocker guide covers 3/4-thread starters.
Cheapest: Bernette B44. Free arm: Brother 4234D. Juki value: MO-644D. Widest cutting range: Janome MyLock 654D.
The picks
Bernette B44
15 stitches using 2, 3 or 4 threads, a 3 to 7mm stitch width, differential feed from 0.6 to 2.0 and up to 1,300 stitches a minute. The thread path is colour coded and open, with a manual needle threader and a lower looper threading mechanism. Sewing Machine World says it is ordered in rather than kept on the showroom floor.
- Threads: 2, 3 or 4
- Stitches: 15
- Stitch width: 3 to 7mm
- Differential feed: 0.6 to 2.0
Skip it if: you want the fastest machine here; the Juki models list 1,500 stitches a minute.
£475at Sewing Machine World, inc VAT, checked 1 Nov 2026
Brother 4234D
Adds 2-thread stitches, a threader and a free arm for cuffs and sleeves.
- Threads: 2, 3 or 4
- Threader: Yes
- Free arm: Yes
- Weight: 6.9kg
Skip it if: you only need basic 3/4-thread seams.
£499at Sewing Machine World, inc VAT, checked 1 Nov 2026
Juki MO-644D
2, 3 or 4 threads, 1,500 stitches a minute and differential feed from 0.7 to 2.0, in a 7kg body.
- Threads: 2, 3 or 4
- Speed: 1,500 stitches a minute
- Differential feed: 0.7 to 2.0
- Weight: 7kg
Skip it if: you want a free arm or easy threading aids.
£499at Sewing Machine World, inc VAT, checked 1 Nov 2026
Janome MyLock 654D
2, 3 or 4 threads, cutting width from 3.1 to 7.3mm, stitch length 1 to 5mm and differential feed from 0.5 to 2.25.
- Threads: 2, 3 or 4
- Cutting width: 3.1 to 7.3mm
- Stitch length: 1 to 5mm
- Differential feed: 0.5 to 2.25
Skip it if: you are price-led.
£579at Sewing Machine World, inc VAT, checked 1 Nov 2026
Bernina L450
Bernina lists 2, 3 and 4-thread stitch formations, Micro Thread Control for fine-tuning the over-edge threads, a manual needle threader, lower looper threader support and a colour-coded threading path.
- Threads: 2, 3 or 4
- Thread control: Micro Thread Control (mtc)
- Needle threader: Manual
Skip it if: you want air threading or the lowest price.
£595at Sewing Machine World, inc VAT, checked 1 Nov 2026
Juki MO-654DE
2, 3 or 4 threads at up to 1,500 stitches a minute, differential feed from 0.7 to 2.0, a lower looper threader and a 2/3-thread converter in the box. Sewing Machine World lists a 2-year warranty and a 7kg weight.
- Threads: 2, 3 or 4
- Speed: 1,500 stitches a minute
- Differential feed: 0.7 to 2.0
- Weight: 7kg
Skip it if: you are price-led; the MO-644D is cheaper.
£665at Sewing Machine World, inc VAT, checked 1 Nov 2026
How we chose
Researched, not tested: we read each retailer and maker listing loaded on 1 November 2026, compared the specs that matter for this job, and gave each pick a provisional score out of 10 (core performance 3, ease 2, value 2, reliability 1.5, UK support 1.5). Prices are inc VAT from one named UK retailer on 1 November 2026 and will change.
Scores are provisional and come from cited sources, not from testing. How we score.
Questions people ask
Why 2-thread?
It gives lighter rolled hems and flatlock on fine fabrics.
Sources
All checked 1 November 2026. We read these; we did not test the products ourselves.