Having just done the 17th edition in January I am in no hurry to sit through the torture all over again to do the 18th, a friend of mine has mentioned on his assessment he has told up to two years before he has to get the 18th as long as he works to the new regulations from January 2019 can any one confirm this? I was planning on doing the update coarse in December but would rather leave it until later next year if possible.