Don’t quote me on this but according to The Sunday Times Driving supplement it’s £2.99 a month.
quote from the paper below:-
Richard Browning, director at Nextbase, said Emergency SOS, which is free to all customers for the first 12 months and £2.99 per month thereafter, differs from other similar services, such as Volvo’s On Call and GM’s OnStar, in that there is no button to press, will activate based on its own protocols even if the car’s airbag is not deployed and doesn’t rely on a call centre intermediary between the car and integrator.
“The reality is, this is going to save lives,” he added.
Hope that’s helps.