London police had earlier confirmed three other investigations against the Oscar-winning actor, bringing the total to six.
These latest accusations bring the total number of claims against the Oscar victor to six - five complaints of sexual assault and one of assault.
Spacey is now under investigation in both the United Kingdom and the USA for a total of six sexual assault claims.
"Officers from the Child Abuse and Sexual Offences Command are investigating the allegations - including the one to have reportedly taken place in Gloucester", Metropolitan police told Radar exclusively in a statement.
The first allegation came from the actor Anthony Rapp in November 2017 who said Spacey had made sexual advances to him in 1986 when he was 14 and Spacey was 26.
In a new interview, actor Guy Pearce has reflected on working with Spacey, saying the filming of the movie L.A. Confidential (1997) was problematic. "Slightly hard time with Kevin, yeah", Guy said (via Page Six).
'He's a handsy guy, ' he added, prompting gasps from the studio audience.
"Yeah. Tough one to talk about at the moment", he said.
After describing the accused sexual abuser as an "incredible actor", a reticent Pearce said he had a "slightly hard time" working with him.
Spacey is also being investigated in Los Angeles County and MA.
Following actor Anthony Rapp's accusations against Spacey in October 2017, he was dropped from a number of projects he was involved with. I'm beyond horrified to hear his story'.
He wrote: "But if I did behave then as he describes, I owe him the sincerest apology for what would have been deeply inappropriate drunken behaviour".