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Best mulching lawn mower UK: a buying guide

Updated: October 2026

You have a lawn behind a terrace, a socket near the back door, and a search that treats a hover, a battery pack and a 43 cm deck as one machine. A best mulching lawn mower UK query will not tell you whether you need a grass box. This page splits the choice into discharge mode, cutting width and the price bands in our [mulching lawn mower comparison](/hub/lawn-and-garden-equipment/mulching-lawn-mower). The Products Compared editorial team used amazon.co.uk listings dated 19 October 2026. There is no mowing trial. A qualifying purchase can earn a commission at no extra cost to you.

You have a lawn behind a terrace, a socket near the back door, and a search that treats a hover, a battery pack and a 43 cm deck as one machine.

Our top picks

LawnMaster LawnMaster MEH1633M-01

Best overall

LawnMaster LawnMaster MEH1633M-01
7.0/10about £69.00
View offer
Murray Murray LE380

Rank 2

Murray Murray LE380
8.5/10about £152.65
View offer
Hyundai Hyundai HY20CLM33

Alternative

Hyundai Hyundai HY20CLM33
7.1/10about £125.99
View offer
On this page
  1. 1.What you are actually buying
  2. 2.Width, with two UK guides that do not match
  3. 3.What this basket costs
  4. 4.Where to go next

What you are actually buying

A mulching lawn mower recuts clippings and drops them back into the sward. The Royal Horticultural Society describes that fine layer as a way to return some nutrients and help the soil hold moisture, if you mow little and often on dry grass. Taking the box off a collecting rotary leaves a longer clipping, which can sit on top of the lawn. In this set, dedicated mulch is the Swift EB122C and the LawnMaster hover, both with no box. Most other rows are 2-in-1 machines: you collect, or you fit a plug or wedge and mulch. The Hyundai HY20CLM33 is the 3-in-1, with collect, drop and mulch. Rear discharge on its own is not a mulch plug.

Width, with two UK guides that do not match

Which? suggests a cut under 35 cm for lawns up to about 50 m², and about 35–45 cm for about 50–150 m². The English Garden uses 30–35 cm for lawns up to about 250 m². Both are buying guides, and they diverge once the lawn is more than a small patch. Measure your grass and the gap beside the shed, then use the guides as two maps. Greenworks claims up to 140 m², the Murray up to 500 m², and the Einhell 43 cm up to 600 m². Those lines are maker text on amazon.co.uk. This file did not time a mow. Every walk-behind here is 50 cm or under, so the permissible guaranteed sound power under the outdoor-equipment noise regulations is 96 dB. That figure is the label.
LawnMaster LawnMaster MEH1633M-01

Testsieger

LawnMaster LawnMaster MEH1633M-01
7.0/10about £69.00
View offer

What this basket costs

Shelf prices in the saved listings dated 19 October 2026 sort these eleven rows into three bands. Entry is about £69–£140: the LawnMaster at £69.00, the Litheli at £109.99, the Hyundai 20 V at £125.99, the Swift 22 cm at £134.99 and the Swift 32 cm at £139.99. Mid is about £150–£200: the Murray at £152.65, the Hyundai HYM3800E at £158.31 and the Greenworks at £199.99. Upper is about £229–£239.94: the Worx at £229.00, the Einhell 34 cm at £237.99 and the Einhell 43 cm at £239.94. On stars, sample size, specification and price, the Murray scores 85 and the corded Hyundai 84. That one-point gap is arithmetic, not a trial of which deck cut cleaner.

Where to go next

Choose the mode first, then a width you can store, then whether the lawn sits on one outdoor lead. After that, use the main table. A square-metre line on a title is the last thing to trust. If the socket is indoors, settle the lead before a 10 m cable decides the purchase.

Common questions

Is a mulching mower the same as taking the box off?
Taking the box off dumps a longer clipping through the chute. A mulching deck, plug or wedge is meant to recut that material so a finer layer falls into the sward. On the Einhell 34 cm listing the bullets never say mulch, while UK reviews describe a plug in the carton. Check the mode on the row before you assume the missing box is the mulch function.
Do I need a 2-in-1, or is mulch-only enough?
Mulch-only is enough when you will never lift clippings, which is the Swift EB122C and the LawnMaster in this set. A 2-in-1 is the better fork when a wet week or a holiday lawn needs the box, because you can collect that cut and mulch the next dry one. The Hyundai HY20CLM33 adds a drop mode if the title's 3-in-1 wording is what you came for.
What width suits a lawn under 50 m², and why do the guides disagree above that?
Which? puts lawns up to about 50 m² on a cut under 35 cm, which covers the 22 cm Swift and the 33 cm rows here. Above that, Which? moves to about 35–45 cm for roughly 50–150 m², while The English Garden still talks about 30–35 cm up to about 250 m². Measure the lawn and the storage gap, and treat both bands as advice.
Why does a 43 cm listing say 600 m²?
The Einhell 43 cm bullets state a maker area of up to 600 m², with a 43 cm cut, a 63 L bag and two 4.0 Ah batteries. That sentence is the listing's claim. This comparison did not mow 600 m² with the machine. Use the figure as the manufacturer's ceiling, then judge the deck by the gate and the bag.
Does a rear roller matter if I mulch?
A roller stripes. The RHS treats that as a finish, and mulching as the way the clippings are chopped and returned. The corded Hyundai HYM3800E is the row here with a rear roller, a stated mulching feature and a 40 L box. The LawnMaster hover has neither a roller nor a box. Buy the roller when the stripe is part of the lawn you want.
What should I expect to pay on amazon.co.uk in this set?
In the 19 October 2026 saved listings the eleven kept rows run from £69.00 to £239.94. Entry sits about £69–£140, the middle about £150–£200, and the upper band about £229–£240. Those are shelf prices for this basket on that date. They will move, and they do not promise a cheaper mulcher outside the table.

Related pages

How to mulch

Corded or cordless

Mulching lawn mower for small lawns

Mulching lawn mower

Best mulching lawn mower: who should pick and skip

Sources

Public UK sources from the research digest. Amazon.co.uk prices and star lines are from the files dated 19 October 2026. Last checked 23 October 2026.

  1. RHS, lawn mowing (retrieved 19 October 2026)
  2. RHS, garden waste (retrieved 19 October 2026)
  3. Noise Emission Regulations 2001, Schedule 3 (retrieved 19 October 2026)
  4. GOV.UK, outdoor noise (retrieved 19 October 2026)
  5. Electrical Safety First, lawnmowers (retrieved 19 October 2026)
  6. GOV.UK, UKCA and CE marking (retrieved 19 October 2026)
  7. GOV.UK, battery recycling (retrieved 19 October 2026)
  8. Which?, lawn mower buying notes (retrieved 19 October 2026)