From the 2017 T&Cs:
https://www.britishairways.com/en-gb...-list-benefits
8.3. On receipt of a satisfactory application form British Airways shall at its discretion issue to the Nominee a discretionary Silver/Gold Partner Card which will be valid for a minimum of 12 months from the date of issue. For Nominees who are existing Executive Club members, the discretionary British Airways Silver/Gold Card period shall begin from the date of acceptance by British Airways of the Nominee and last until the Nominee’s Membership Year End date and for the 12 month period thereafter. For Nominees who are not existing Executive Club Members at time of nomination Silver/Gold Cards will be valid for a period of 12 months from the date of acceptance by British Airways of the Nominee.
So If someone gets nominated and only has 2 months left in his/her's current membership year, would you suggest to create a new account or not?