At a glance
The cordless angle grinder has become a genuine alternative to corded models for most workshop and trade tasks in the UK. Modern 18V brushless platforms deliver enough sustained power for cutting metal, grinding welds, removing rust and working with stone and tile – and the freedom from a trailing lead is a real practical advantage in tight spaces, on site or in awkward outdoor locations. The challenge is that the market has expanded quickly and the differences between models are not always obvious from the numbers alone.
We tested four of the most popular cordless angle grinders available in the UK across a range of real workshop tasks – cutting 3mm mild steel bar, grinding weld seams, timed disc changes and extended runtime sessions. All four were tested with equivalent battery capacities to keep comparisons fair. Full individual reviews are available for each model if you want to go deeper on any of them.
How we tested. Every grinder was tested on the same tasks in the same workshop over the same period. Tests included cutting 3mm mild steel, grinding weld seams flush, disc changes timed with and without tools, and continuous runtime at working load. All scores reflect real-world UK workshop use rather than manufacturer laboratory figures.
Quick verdict summary
All 4 models ranked
The Makita DGA452Z is the best all-round cordless angle grinder we tested and the one we would recommend to most UK tradespeople and serious DIYers. It runs on Makita’s 18V LXT platform – the same batteries used across the Makita cordless range – and delivers 8,500rpm with a 115mm disc that handles the vast majority of cutting and grinding tasks cleanly. Power delivery is consistent under load, which is where cheaper alternatives begin to struggle.
The tool-free guard adjustment and spindle lock make disc changes quick and the paddle switch with lock-off gives solid accidental-start protection. It sits in the mid-range of this group and represents the best balance of performance, build quality and value we tested.
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The DeWalt DCG405 is the most feature-rich grinder in our test and the natural choice for anyone already in the DeWalt XR battery ecosystem. The 125mm disc capacity gives slightly more versatility than the Makita’s 115mm and the electronic brake stops the disc quickly after trigger release – a genuine safety benefit during frequent disc changes or work in confined spaces. Power is strong and stays consistent throughout the battery charge.
It finishes second rather than first primarily on price – the performance advantage over the Makita is marginal in most real-world tasks. For existing DeWalt XR owners the battery compatibility tips the decision firmly in its favour.
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The Milwaukee M18 BLSAG115 is a serious tool with a brushless motor that delivers strong sustained power and the best overload protection in our test. When the disc bites hard into material and the grinder starts to labour, the Milwaukee’s electronics manage the situation more smoothly than the competition. For heavy continuous use this matters considerably – for occasional workshop tasks it is less relevant to the buying decision.
It is the most expensive body-only option in our test and the heavier weight is noticeable in extended sessions. A strong choice for M18 platform owners and heavy-use applications, but third overall on value grounds.
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The Bosch GWS 18V-10 is the most affordable grinder in our test and delivers competent performance for light to medium workshop use. The 10,000rpm no-load speed is the highest in the group and it feels lively on lighter cutting tasks. Build quality is solid and Bosch’s ergonomics are well considered – it is comfortable to hold for extended periods and the compact size makes it easy to work in tighter spaces.
Under heavier sustained load the performance gap versus the Makita and DeWalt becomes apparent. For a DIYer tackling occasional metalwork or renovation tasks it is a capable and well-priced tool. For frequent or heavy professional use, the step up to the Makita is worth the extra outlay.
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Head to head comparison
| Model | Disc size | No-load RPM | Battery | Score |
|---|---|---|---|---|
| Makita DGA452Z | 115mm | 8,500rpm | 18V LXT | 4.6 / 5 |
| DeWalt DCG405 | 125mm | 9,000rpm | 18V XR | 4.3 / 5 |
| Milwaukee M18 BLSAG115 | 115mm | 9,000rpm | 18V M18 | 4.1 / 5 |
| Bosch GWS 18V-10 | 115mm | 10,000rpm | 18V ProCORE | 3.8 / 5 |
What to look for when buying a cordless angle grinder in the UK
Disc size is the first decision – 115mm handles most domestic and light trade tasks including cutting thin metal, tile work and surface grinding, while 125mm gives a slightly greater depth of cut that matters for thicker stock. For most UK users 115mm is sufficient and the tools are lighter and more manoeuvrable as a result.
Always check the maximum RPM rating on the disc matches or exceeds the grinder’s no-load speed before fitting. Using an undersized or incorrect disc on an angle grinder is a serious safety risk. Never use a cutting disc for grinding or vice versa, and always check the disc packaging before fitting.
Final verdict and recommendations
For most UK users the Makita DGA452Z is the right choice – consistent power under load, excellent build quality and a price that sits comfortably in the mid-range. The combination of performance and value is the best we found in this test, and for anyone already running an 18V LXT battery collection it is the obvious addition. For anyone starting fresh, it is still the best all-round option.
For existing DeWalt XR owners the DCG405 makes a strong case – the electronic brake and 125mm disc capacity are genuine advantages, and battery compatibility changes the value calculation considerably. For heavy continuous use the Milwaukee M18 BLSAG115 has the best overload management in the test and is the right choice for M18 platform owners or anyone running a grinder hard on a daily basis. The Bosch GWS 18V-10 is a competent and well-priced option for lighter workshop use where maximum sustained power is not the priority.
For most UK users: Makita DGA452Z. Best combination of performance, build quality and value. Ideal for LXT platform owners.
For DeWalt XR owners: DeWalt DCG405. Electronic brake, 125mm disc, battery compatibility with existing XR tools.
For heavy continuous use: Milwaukee M18 BLSAG115. Best overload management in the test. Right choice for M18 owners or heavy daily use.
On a budget: Bosch GWS 18V-10. Competent performance for lighter workshop use at an accessible price point.
The Makita DGA452Z is the best cordless angle grinder available in the UK for most users – consistent power under load, excellent build quality and a price that sits comfortably in the mid-range. For existing platform owners the battery compatibility calculation may favour DeWalt or Milwaukee, but for anyone starting fresh or already in the Makita LXT ecosystem it is the clear choice.
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