Certificate number : is the 5 digit number, after one of these prefixes for 2012 following :E12B, E12M, E12S shown top left on your Certificate of Insurance. Transaction number : is the transaction reference starting with M or S or B, shown in bold in the first paragraph on your Certificate of Insurance.
This facility is for adding cover for a day or sequence of days. If it does not seem to cater easily for your requirements, please contact us.