Thanks everyone,
@ MisterTechMan Having separate systems is one possible scenario, it would mean an overhead of managing the catering side (menu's, pricing, reporting etc.) in two systems as well as finding a way to have two tills systems (even if we dual boot or virtualize.)
@p858snake We currently have a working solution in place with both schools sharing a single system and the data being merged in from each school, but the solution is EOL and the vendors new cloud solution can't handle this scenario. I guess a completely separate system is an option we can consider, but there would be an overhead of transferring and maintaining the staff and students details in the system and parents having multiple payment systems, one for the canteen and one for the school might be a challenge.
@DavidYoung LiveRegister isn't one that we've looked at, will add them to the list.
@ HereIGoAgain2601 CRB are the one vendor that have claimed they can do it, reassuring to hear that somebody is successfully running the config.