Apax owns Scandanavian garden centre group Plantasjen, but a representative said: "I get the impression we're not [bidding]. It's not coming up in investment meetings and it would be if we were at second round."
Duke Street Capital is a mid-market investor and has bought into Focus in the past. But a representative said: "We're not involved."
Terra Firma founder Guy Hands has confirmed his interest in GCG. Terra Firma's PR company Finsbury had no-one available for comment on Thursday.
The £300m sale was due to complete by the end of the year. Second round bids went in last week.