The offer was launched in April 2013.
Bruce Reid, distribution director, said: “Since relaunching our Introducer service in May we’ve seen registrations increase by over 400%.
“Leads have increased by 97% and we’re achieving a 60% success rate on converting quotes into sales.
“Brokers really like what we’re delivering and so we’ve decided to extend our special commission offer one last time until the end of July.”