In a letter to its shareholders the group said it was now in “ongoing” discussions with one of these potential investors.
It stressed that while the terms of investment had yet to be finalised the deal would not result in any new investor owning more 30% of the total issued ordinary shares post investment and would be for a subscription price in excess of £75 per share.
The letter is seeking permission from shareholders at a meeting on 29 March for the changes. It would involve the creation of a new class of preferred C shares.
The directors say they want to be in a position to “move quickly to complete the investment once the detailed terms of the investment are finalised”.
The group is also eyeing a fifth round of its Equity for Punks crowdfunding campaign later this year.