So my first year of driving is over and Tesco as I expected asked for even more this year to renew, £1700 ->£1880ish so I phoned them and said thanks but no thanks etc, so my proof of NCB has just arrived and it says two years. Am I missing something or is this a mistake? I'm over the moon with having one NCB so seeing a two next to that sentence is just too good to be true right? or am I just wrong in how NCB works? and this April marks my first full year driving.