Just to point out that the Ami in Hi Grade's V139 - Ami
(ami1.jpg ami2.jpg appears as Ami in the pioneering 18R video Charlie's Private Sessions vol.1. Though that film is listed here, the only girl noted is Cindy Read in the title sequence. Claire Margarson also appears in the title sequence, which is a trailer for vols 2 and 3 whose release was delayed by the 18R standards tightening in late 1997.
CPS Vol 1 is a hardcore solo girl video as released, and also features Roxanne Hall (as 'Roxanne'), Ami as mentioned and a Manchester model named Alex (not any of the Alexes listed here).
Roxanne's scene is only just "hardcore" (she puts her finger in briefly, once..) but Ami's scene most definitely is, though most of the action takes place with a huge industrial grade vibrator which is not designed for insertion as such..