Most likely having been a part of the team sent to recover the convoy, Kelly and the recovery unit fought a losing battle for most of the morning before the arrival of Sgt. Nathan Hale allowed the unit to wipe out the entrenched Chimeran forces. As British forces consolidated around the fountain, Chimeran reinforcements were brought in by Dropship, Jacobs, along with Kelly were ordered to eliminate the reinforcements, which they did with the help of Nathan Hale.
As Chimeran forces were unable to break the hold of British forces, the Chimera decided to deploy the Stalker that had been preventing further reinforcements from deploying into Manchester. Alongside British forces, the recovery unit was successfully able to destroy the Stalker and eventually recover the Angel.
He may have survived the battle and could have traveled to Bristol.