Allison Williams

Allison Williams was Rachel Jensen's assistant during the Shoreditch Incident in the relevant area of London in November 1963. She appeared on site with Professor Jensen and witnessed a Dalek kill several soldiers attached to the ICMG under the command of Group Captain Gilmore. It was at 76 Totter's Lane that she met the Seventh Doctor and Ace, whom she later assisted in defeating both the Renegade and Imperial Dalek factions who were searching for the Hand of Omega. (DW: Remembrance of the Daleks)

According to one account, Professor Allison Williams led the scientific team which investigated the Cyberman ship in Antarctica in 1986. (DWN: The Power of the Daleks)