Webb Review UK 2026
Quick verdict
Score: 7.3/10
Best for: Keeping your lawn tidy to suit its size and terrain
Not for: A lawn much bigger or rougher than this mower is built for
Bottom line: A capable lawn mower (petrol mower, 51cm cutting width, 173cc petrol engine) for a well-kept lawn.
Overall, the Webb WER510SP is a petrol rotary lawnmower intended for medium-sized lawns, using a 173cc 4-stroke petrol engine and offering a 51cm (20-inch) cutting width. The 51cm deck size is positioned to cover ground efficiently on typical garden grass. It is also described as self-propelled, which should reduce day-to-day pushing effort, especially on slightly longer lanes. Performance on very uneven ground depends on how it is guided, and results can vary with grass height choices. Cutting height count is mentioned.
Pros
- Petrol mower
- 51cm cutting width
- 173cc petrol engine
- Self-propelled
- Keeps the lawn tidy for its size
Cons
- Petrol needs fuel, oil and more maintenance
- Match the cutting width and power to your lawn size
- Heavier models are harder to manoeuvre and store
Mower Type and Power
Powered by a 173cc 4-stroke petrol engine, the Lawn mower is a petrol rotary lawn mower that provides self-propelled cutting. This mower type uses a rotating blade system for continuous forward cutting, supported by the petrol engine's sustained torque. The self-propelled drive reduces the physical effort needed to move the mower across the lawn, while the operator still controls direction, speed and turning. As it is a petrol machine, it requires appropriate petrol handling and storage.
Cutting Width and Deck
With a 51cm (20") cutting width, the Webb covers a fairly wide strip in each pass, which can help reduce the number of strokes needed on medium-sized lawns. The deck size matches this width, so the mower can move grass more evenly across the full path. For consistent results, overlap previous passes slightly, especially when turning or trimming edges, as deck coverage can be less uniform near borders. The mower offers 7 cutting heights, so deck clearance changes as height increases or decreases, which can affect how cleanly longer growth is handled.
Lawn Size and Collection
For lawn care planning, the Lawn mower is a lawn mower with a 51cm (20") cutting width and a 65 collection bag for catch-and-collect mowing. The wider deck can reduce the number of passes on lawns where mowing routes are planned in straight lines, while the collection bag capacity supports jobs where clippings need to be gathered. The bag may fill more quickly on tall or wet growth (not stated), so sections of the lawn can be judged in advance, the bag emptied when needed, and mowing carried out in smaller loops around uneven edges.
Ease of Use and Storage
Getting started and moving the Webb around the garden relies on handling its petrol rotary setup and using the controls comfortably. With a 51cm cutting width, it can cover more ground in fewer passes, while still requiring careful steering near tight borders. The mower has 7 cutting heights, which can be matched to uneven lawns, but changing the height settings involves stopping and repositioning the mower. Storage is straightforward because it is sized for regular outdoor use, and the included 65 collection bag helps keep clippings contained during clean-up. Ease of use therefore comes down to consistent, safe handling and appropriate parking between sessions.
Who Is This Lawn Mower For?
The lawn mower suits people who want a petrol rotary mower for regular outdoor mowing, thanks to its 51 cm cutting width and 173 cc 4-stroke engine. It is also a good match for buyers who want adjustable cutting, as it offers 7 cutting heights. Self-propelled assistance helps when mowing takes longer, but it still needs enough outdoor space to manoeuvre around a 20-inch class deck. It is less suitable for tight yards or heavily sloped areas, and it is not the lowest-effort option for anyone prioritising simple, low-work mowing.
Where to Buy in the UK
Finding the Webb WER510SP in the UK usually comes down to checking garden machinery retailers. This model is a petrol, self-propelled rotary lawn mower with a 51 cm cutting width and a 173cc 4-stroke engine, so search listings that mention those details and include the product code "WER510SP", since similar The Webb models can differ. If stock is limited, online listings and direct The lawn mower stockists may be worth checking.
Frequently Asked Questions
Is the Webb worth it?
For keeping a lawn tidy with the least hassle, the lawn mower (a petrol mower) does the job with a 51cm cutting width. Whether it suits you comes down to your lawn size, terrain and how much effort you want to put in. Check the current Amazon UK price, as mowers are often discounted in season.
What type of mower is this lawn mower?
The Webb is a petrol mower. Petrol mowers are powerful and cordless for big or rough lawns; cordless battery mowers are quiet and low-maintenance for most gardens; corded electric are light and cheap for small lawns; hover mowers glide for edges and slopes; manual push mowers are eco and silent for tiny lawns. Choose the type for your lawn size and terrain.
What is the cutting width of the Webb WER510SP?
The lawn mower has a 51cm cutting width. A wider deck cuts more grass per pass so you finish faster - better for bigger lawns; a narrower deck is lighter and more manoeuvrable around borders and obstacles. Match the width to your lawn size and how tight the spaces are.
How powerful is this lawn mower?
The Webb runs on a 173cc petrol engine. Petrol engines give strong, sustained cutting power for long grass and large lawns.
Is the lawn mower self-propelled?
Yes - the Webb is self-propelled, so it drives itself forward and you simply steer. That's a real help on larger lawns or any slope, saving you pushing the full weight of the mower. On small flat lawns a push mower is fine and lighter.
Is the lawn mower easy to store?
Storage depends on the design - many electric and cordless mowers fold or stand upright to save space, while petrol and ride-on mowers need more room. The Webb WER510SP is a typical example for its type; if space is tight, look for a compact-fold or upright-storage model like Flymo's EasiStore range.