By that request, I guess you mean the CSM rosters on the new MF?
If that is the case then no-one can help you as the fleet is not yet operational, and in any case, as I understand it, will be shorthaul only for the first month thereafter starting to include longhaul routes.
People will be able to give you sample rosters for LGW cabin crew which also operate a mix of long and shorthaul flights, but reading across from LGW to LHR may be misleading, but on the other hand may give you some idea of the balance betwen LH and SH as experienced at LGW.
At the end of the day, the company will be operating the LHR fleet under the same or very similar constraints as at LGW, ie CAP371 which is the law, with respect to duty and rest, but just to repeat, it will depend on the balance betwween LH and SH at LHR.