Nicholas Lovell and Louise Cox will both be sentence within four weeks.
The public gallery was packed with the victims' family and friends as well as supporters of the pair who entered guilty pleas.
More top news
The fourth batch of Bristol Shauns are rolled out at The Grand Appeal auction.
The third batch of Bristol Shauns are rolled out at The Grand Appeal auction.
A court has been shown CCTV footage of Nathan Matthews buying a circular saw from B&Q which he allegedly used to cut up her body.