Robot mower for a small UK garden
Updated: October 2026
On a 100–300 m² city lawn, getting the mower out and tidying the edges can take longer than the cut. A robot mower for a small UK garden can take the regular middle of the lawn, but it will not remove edging, outdoor power or the need for a clear boundary. In our [Yard Force robotic lawnmower comparison](/hub/lawn-and-garden-equipment/yard-force-robotic-lawnmower), the size-labelled rows are the Bosch VisiMow at 100 m², the YARDCARE V100 at 150 m² and the Yard Force Compact 300RBS at 300 m². Border and battery matter as much as the area in the title. A qualifying purchase can earn a commission at no extra cost to you.
On a 100–300 m² city lawn, getting the mower out and tidying the edges can take longer than the cut.
On a 100–300 m² city lawn, getting the mower out and tidying the edges can take longer than the cut. A robot mower for a small UK garden can take the regular middle of the lawn, but it will not remove edging, outdoor power or the need for a clear boundary. In our Yard Force robotic lawnmower comparison, the size-labelled rows are the Bosch VisiMow at 100 m², the YARDCARE V100 at 150 m² and the Yard Force Compact 300RBS at 300 m². Border and battery matter as much as the area in the title. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Rated area | Boundary | Battery | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Bosch Bosch VisiMow 18V-100 | Up to 100 m² | Wire-free claimed | Not included; POWER FOR ALL 18 V | 8.2 | about £296 | View offer |
| Preis-Tipp |  YARDCARE YARDCARE V100 | Up to 150 m² | No perimeter wire; magnetic strips | 18 V 4 Ah detachable, stated | 8.0 | about £349.99 | View offer |
| Alternative |  Yard Force Yard Force Compact 300RBS | 300 m² | Not sold as wire-free | 20 V; life printed as 1 hour | 5.6 | about £428.06 | View offer |
On this page
Which listings actually name a small lawn?
Start with mowable grass, not the whole garden. A 10 m by 10 m patch is 100 m². Two patches are not a simple 200 m² job if steps or a gate separate them. The rating is maintenance over repeated cycles, not one battery run.
The Bosch VisiMow 18V-100 is rated to 100 m² with wire-free SmartVision. About £296 is the lowest mower-body price, and the battery and charger are excluded. It suits an owner who already has a POWER FOR ALL 18 V pack.
The YARDCARE V100 is rated to 150 m², with no perimeter cable and an 18 V 4 Ah battery stated. The charger is not named. About £349.99 works if the seller confirms the charging equipment and the edge is obvious.
The Compact 300RBS is rated to 300 m² and uses a boundary wire. Yard Force states about 60 minutes and a 30% incline. About £428.06 and 2.8 stars from 28 UK-headed reviews need caution: charging trouble and getting stuck recur.
SUNTEK names 250 m², but the slope is printed as both 35° and 35%. Use the buying guide if slope or narrow passages decide it.
Plan for the strip you will still trim
Blades sit between the wheels, so they do not reach a wall. A wire needs clearance, and a camera may stop short of an uncertain edge. You will still strim or shear that strip. Cut to edge does not put the blade flush with every fence.
The MB400 guide uses a 30 cm offset. That is MB400 guidance, not a measured 300RBS fringe. Reviews still mention a visible edge. Do not close the gap just to save strimming.
Bosch’s UK information for the VisiMow says it may leave roughly 100–150 mm. A UK review describes about 5 inches. Paving or a raised kerb gives a camera contrast. A flower bed level with the grass can look like more lawn. The boundary wire or wire-free comparison says when a loop is the more predictable choice.
Sort out power, battery and the first cut
The 300RBS returns to a station, so that station needs outdoor power and a level approach. A qualified electrician should fit a socket if none is safe. An indoor extension is not a permanent garden supply. The V100 lists a detachable battery and does not name a charger.
The Bosch is a bare tool. Existing POWER FOR ALL 18 V owners can use a compatible pack. A first-time buyer must add a battery and charger. It is not an about-£296 ready-to-mow package.
Cut long grass with a conventional mower first and clear stones. Reviews for the 300RBS and V3 describe stalling in difficult growth. A robot is meant to take frequent light clippings, not reclaim an overgrown patch in one pass.
A compact shortlist
Choose Bosch for a defined lawn up to 100 m² if you already own the battery system. Consider the V100 around 150 m² when you want wire-free setup and the seller confirms the charging kit. Choose the 300RBS nearer 300 m² when a boundary loop suits the garden and you accept its weak review evidence. See the best options in this comparison for the model-level skip conditions.
Common questions
Is 150 m² a small lawn for these robots?
Yes. In this comparison, clearly stated capacities range from 100 m² for the Bosch to 600 m² for the WORX, with the V100 at 150 m². Measure only mowable grass and allow for narrow passages or separate zones rather than choosing from the total garden footprint.
Will I still need a strimmer?
Probably. The blade cannot safely cut flush against every wall, and wire or camera navigation normally leaves an edge. Bosch indicates roughly 100–150 mm for its VisiMow, while a wired layout may require a larger offset at some borders. Plan occasional edging as part of ownership.
Can a robot work without an outdoor socket?
A dock-based model needs a safe outdoor electrical supply. A detachable or tool-battery mower can be charged elsewhere if its instructions permit, but you still need the correct charger. Do not create a permanent outdoor arrangement from an unsuitable indoor extension lead.
What if my flower bed is level with the grass?
That is a difficult edge for camera navigation because there may be little visual contrast. A boundary loop can be more predictable, or a compatible no-go marker may protect a local area. Follow the model instructions and supervise initial runs, especially near a drop or pond.
Is the 600 m² WORX better for a small garden?
Not simply because it has greater capacity. Its price of about £457.17, 3.1-star rating and reported Wi-Fi and docking issues matter more than unused area headroom on a 100–200 m² lawn. Buy for your border, charging setup and evidence, not the largest number.
What happens if the grass is already long?
Cut it down with a conventional mower first and clear loose obstacles. Small robot blades are intended to mulch frequent, light growth. Starting in long or wet grass increases the chance of clogging, wheel slip and repeated stops before the robot has established a maintenance routine.
Related pages
Sources
Sources checked for this comparison; last retrieved on 17 October 2026.
- Yard Force UK robotic mower collection (retrieved 17 October 2026)
- Yard Force Compact 300RBS (retrieved 17 October 2026)
- Yard Force, how to install the boundary wire and charging station (retrieved 17 October 2026)
- BSI, BS EN 50636-2-107:2015+A3:2021 robotic lawnmowers (retrieved 17 October 2026)
- Supply of Machinery (Safety) Regulations 2008 (retrieved 17 October 2026)
- GOV.UK, Supply of Machinery (Safety) Regulations 2008: Great Britain (retrieved 17 October 2026)
- GOV.UK, noise emission by outdoor equipment (retrieved 17 October 2026)
- Consumer Rights Act 2015 (retrieved 17 October 2026)
- easymower, perimeter wire and wire-free (retrieved 17 October 2026)
- amazon.co.uk listings for the ASINs in this comparison (retrieved 17 October 2026)