SMGP if I'm not mistaken is the initials of 4 men in the IOM. From memory I think they used to chip in a few quid a week each and then split the total between local riders for the MGP or maybe TT. I think they helped Barry Wood for a few years. He posts on here so it might be worth looking through the member list and PM ing him if he doesn't see your posting.
Cheers
Russ