Panmure Gordon, the British boutique investment bank controlled by Bob Diamond’s private equity vehicle, is in talks with City of London rival finnCap Group Plc about a possible takeover.

FinnCap is in “early” discussions with Panmure Gordon, it said in a statement Tuesday. The non-binding proposal from Panmure Gordon would see it buying finnCap for cash, with shareholders able to choose to receive partial consideration in shares.

FinnCap’s shares were up almost 30% at 8:01 a.m. in London

Read more: BNN Bloomberg