If the constituent local authorities of a joint committee of burial authorities are unable to purchase by agreement and on reasonable terms suitable land for the purpose of enabling the committee to exercise their powers under section 214 above and none of those authorities is a district council F1or Welsh principal council, the committee may represent the case to the council of the district F2or Welsh principal area in which their area or any part of it is situated, and thereupon section 125 above shall apply as if the committee were a parish or community council and their area were a parish or community.