Tefal Blendforce II Review UK 2026

Key specifications

Blending Power and Performance

Blending power paired with a 2L plastic jug that has a stated effective capacity of 1.25L to help limit overfilling during thicker mixes. Four removable stainless steel blades pull ingredients down into the blade zone, then break down textures for a smoother blend. Two speeds plus pulse offer more control, with lighter mixes suited to the lower setting and chunkier tasks supported by the higher speed or short bursts. Performance should feel consistent, though results depend on how finely ingredients are cut.

Capacity and Jug

Capacity matters with the Tefal, since its jug is listed as 2L total volume with a 1.25L effective capacity. In practical use, this means the blender can hold up to 2L in the container, but it is designed to blend effectively with about 1.25L filled. That difference matters for thicker mixes, because leaving headroom helps the liquid move and reduces overflow risk. For smaller households, 1.25L is usually enough for smoothies, soups, or shakes. For larger batches, multiple runs may be required.

Speeds, Programs and Controls

The blender includes 2 speeds and a pulse setting. The first speed is suited to slower, thicker blends, while the second speed increases processing for quicker results. Pulse is designed for short bursts, which supports tighter control over chunkier ingredients, such as when crushing ice or dealing with tougher pieces. Overall, the controls are straightforward, with speed selection and pulse operation, although this limits finer gradations between the two speeds.

Type: Jug, Personal or Hand Blender

This model is a jug blender, meaning ingredients are processed inside a container rather than being blended directly in a pot or handheld cup. The Tefal uses a 2L plastic jug, with a stated 1.25L effective capacity, which fits small to medium batches. It has 600W power, and blending occurs when the jug is filled and the 4 removable stainless steel blades spin. With two speeds plus pulse, it can handle thicker mixes such as smoothies, but it is less suited for tiny single servings due to the jug size. Additionally, it is designed with the blending results tied to load size.

Cleaning and Build

For jug blenders, day-to-day cleaning depends mainly on how removable the parts are and how easily spills release from the jug. With the blender, the jug is plastic and the blender uses 4 removable stainless steel blades, so the components can be separated for rinsing. After use, warm water can be added, the blender can be run briefly on a low speed, then the contents can be emptied and the parts wiped, as dried smoothie can cling. Blade removal exposes the edges, so the seals around the blade area need drying. The 2L jug has 1.25L effective capacity, which provides a practical fill limit.

Who Is This Blender For?

Who should consider the Tefal Blendforce II BL420840 if they want a simple jug blender for everyday drinks? This model suits people who prefer a 2 L plastic jug with an effective capacity of 1.25 L, and who blend in batches rather than single servings. It has 2 speeds plus pulse, so it can handle routine tasks like smoothies. The blender also features 4 removable stainless steel blades for easier maintenance. With 600 W power, it fits most casual kitchen needs, though heavy ice crushing and dense mixtures may require careful timing.

Where to Buy in the UK

Finding the Tefal blender model BL420840 in the UK is easiest through major appliance and online retail channels. Shoppers can start on Amazon UK, John Lewis, Currys, AO, Argos, or Lakeland, then compare listings to confirm the model number matches BL420840 and the colour matches the black version. Listings should be checked against the core specifications stated for this model, including 2L plastic jug capacity and 1.25L effective capacity, 600W, 2 speeds with pulse, and removable stainless steel blades. In-store availability can vary by region, so online stock levels are often the most reliable reference point, while delivery and returns depend on the seller's policy.