Pick the kind of kettle before the model
Most kettles here are boil-only: you fill, switch on and it stops at 100 °C. The Bosch TWK7203GB and the Breville VKT159 add temperature selection, which Ideal Home’s kitchen appliances editor describes as useful for speciality tea or coffee at a chosen temperature but ‘far from an essential’. Bosch lists seven levels from 70 °C to boiling, and Breville’s manual gives suggested temperatures such as 80 °C for green tea.
Material is the other main choice. The Bosch, Smeg, Dualit and Sage kettles are listed with stainless steel, the Morphy Richards 108004 is glass, and the Russell Hobbs and Kenwood models are plastic. The Russell Hobbs travel kettle is the compact option at 0.85 L, against 1.5 to 1.7 L for the rest.
Maximum capacity is not the least you can boil
A kettle’s capacity is the most water it holds. The minimum fill is the least it needs to switch off properly, and the two are separate figures. Bosch prints a 300 ml minimum fill beside the 1.7 L usable volume of the TWK7203GB, and Breville’s manual says the VKT159 needs about 250 ml, or one teacup. Several makers, including Smeg, Dualit and Kenwood, print no minimum on the pages we read, so check the manual before assuming a single cup is fine.
Which? looks for a minimum fill of 300 ml or less, and the Energy Saving Trust’s tip is to boil only the amount of water you need. A 1.7 L kettle is not wasteful if you fill it for the number of cups you want, and a small maximum is not a guarantee of a small minimum.
A power rating is not a boil time or a running cost
Ratings here run from 1000 W for the Russell Hobbs travel kettle to 3000 W for the Bosch, Smeg, Dualit, Kenwood and Russell Hobbs Inspire, with the Sage at 2400 W. Watts are the rate at which a kettle draws power, not the energy a boil uses, and Which? says kettles with similar power levels do not always boil at the same speed.
Because of that, the cards compare no boil times and no running costs. Where a maker states a boil time, as Russell Hobbs does for the Inspire, it is the maker’s own claim, and we say so.
Lid, filter and the outside of the kettle
Check how you fill and clean it. A limescale filter is listed for the Bosch, and a removable one for the Smeg, Dualit, Kenwood and Morphy Richards 100742, and Which? suggests checking that the filter fits snugly in the spout. The Smeg and Sage lids open softly to release steam gradually, and the Kenwood and Morphy Richards 100742 lids are removable.
Do not assume the outside stays cool. Bosch says the double-walled housing of the TWK7203GB gives a reduced surface temperature, which is a different claim from staying cool, and Electrical Safety First warns that the outside of a kettle can get extremely hot.
UK plug, cord and care
Electrical Safety First says electric kettles must be fitted with a UK 3-pin plug and fuse, and advises buying from a reputable retailer, not a third-party seller of unknown origin. Of the pages we read, only Smeg prints a plug type, a UK (G) plug. For the others, check the plug on arrival: a kettle that does not arrive with a UK 3-pin plug does not meet that advice, so contact the seller.
Keep the kettle away from the sink, wipe it only when unplugged, descale it with a product made for kettles, and never fill it above the MAX mark: Breville’s manual warns that boiling water may be ejected. Electrical Safety First also says a kettle should have automatic shut-off or boil-dry protection.
How this list was made
We chose kettles that show different choices, not different colours of one model, and left out any whose exact Amazon.co.uk listing or manufacturer specification we could not confirm. Several candidates were dropped because the manufacturer’s UK page for the exact code could not be read, or the listing pointed to a different regional variant. Russell Hobbs’s UK site refuses automated access, so those two pages were read from archived copies.
The list is not a ranking and makes no claim about sales or value. One card is marked as a featured example to illustrate the page, and the card says why. Prices, stock, star ratings and review counts are not shown because Amazon only permits them from its own site, so each button takes you to Amazon.co.uk to check the current price and availability.