Schedules A and C (which are now collectively called "Property Returns") and their supplements as well as Schedule D are now part of the Online Suite (web link). You will need to register to gain access to these forms.
Other property-related forms:
Schedule 14a (use of Model Trust property by other Churches or Congregations)
TMCP Licences (for regular part-time, non-exclusive use and letting of Methodist property by third parties on the basis of a licence)