Yes, provided that it its run by a commercial operator who is adequately insured for third party liability.  Wherever it is placed, the ground underneath the hog roast must be covered to prevent heat damage to the underlying surface, and to prevent spillage, especially of hot fat. A copy of the insurance, and details of how the ground will be protected, will be required.

If placed on the Orchard Hall patio, the hog roast must be at the south end, on the artificial grass area.  The grass must be protected by wooden boards, or similar.  All equipment must be brought in round the side of the building, and not taken through Orchard Hall.  Hall hirer and hog roast provider must ensure that the side fire exit route is not blocked at any time while the hall is occupied.

If placed north of Cherry Hall, the fire exit door must not be blocked, and there must be at least a two metre clearance to enable emergency access from the car park to the foyer and Orchard Hall.

If placed on the gravel south of Cherry Hall, in the Church Hall car park, or anywhere on the High Street car park area, then the hall hirer is responsible for supervision of the car park.

Note that power sockets are provided externally, on the patio, outside the Cherry Hall fire doors, and at the High Street car park entrance.  All cable runs from the power sockets to the hog roasting equipment must be properly positioned so as not to present a trip hazard.