Two bog bodies, Meenybradan Woman and Lindow Man, have been conserved. The principal technique used has been freeze-drying after impregnation with polyethylene glycol 400. Preliminary tests were carried out on pigskin that had been stored in anaerobic peat slurry. Choice of consolidant was made on the basis of least shrinkage on freeze-drying. Shrinkage data are presented for the two bodies conserved and also temperature measurements during the freeze-drying process. Several novel techniques were devised for the conservation work which is described.