Ian Hutchinson, Bruce Anstey, Guy Martin, Adrian Archibald, Martin Finnegan, William Dunlop and Ryan Farquhar are among the other big names expected to compete at the meeting.
Bruce Jenkyn-Jones and Ian Simm at Impax Asset Management run the three-year-old Impax Environmental Markets fund, a closed-end fund with 41 million pounds in assets.
"As part of our continued commitment to the success of Bath Rugby, we are delighted that Sir Ian will be joining us, " said Bath Rugby chairman Bruce Craig.