Qettle Signature Modern 4-in-1 (Round Spout, 7L)

The Qettle Signature Modern Round 7L is the same tap as the standard Signature, but with a round spout and a significantly larger 7L boiler underneath. At £1,185 you pay roughly £75 over the 4L version, and the entire justification is tank capacity. This exists for households of five or more, or for people who entertain regularly.

The 7L tank is the headline and it delivers what it promises. Filling a 2L kettle-equivalent for pasta, then immediately pouring six mugs of tea, will not trigger a noticeable reheat lag. The 100°C dispense is genuine, the marine-grade stainless build matches the smaller model, and the round spout is arguably more universally kitchen-friendly than the square. For the price differential, the upgrade is the easiest call in Qettle's range if you have a busy household.

Where it gets harder to recommend is the running cost and the undersink footprint. A 7L tank kept at 100°C draws more idle power than a 3L or 4L. The boiler unit is also physically larger, which can be tight in cabinets already holding a waste disposal or water softener. Measure your cupboard before ordering, and only pay the premium if you genuinely run out of boiling water with smaller tanks.