Unfortunately it's down to them and in many cases they'll suggest they have a set list due on boarding or compliance reasons. Bearing in mind its nearly the same list from those agents that quote that you know it comes down to kick backs. The high churn small margin guys can afford to do this. The better, smaller setups can't unfortunately.
If they agent won't budge then ask them if you can get Lucy to give them a ring and have a chat and hopefully they'll get the message. The pension option alone is a massive benefit to those with warchests.