Ooh that Russel Hobbs made me feel all nostalgic.

Okay I'll start the ball rolling

Tefal Elegance 3000W stainless jug
500ml water, start temp 16.5°C
79.8 secs to auto stop

Morphy Richards 3.1kW, also a stainless steel jug.

75.9 seconds from 18 degrees. I think you win.

As an aside, while we're talking about watts and the like, I saw a
newspaper report yesterday about a solar power station near Madrid.
The capacity was quoted in 'megawatt hours per year'! I despair that
my electricity usage is quoted in kWh, rather than joules, but really.
MWh/year. They'll be clocking my speed in mile per hour weeks per
month next...