The following information is available:

(a) In June 2018, Darren bought 1,000 ordinary shares in Cubson plc for £8,400..

(b) In August 2023, Phere plc made a takeover bid for Cubson plc, offering two ordinary shares and one preference share in Phere for each ordinary share in Cubson.

(c) This offer was accepted on 21 August 2023, when the market value of ordinary shares in Phere plc was £4 per share and the market value of preference shares in Phere plc was £2 per share.

Indicate how Darren's cost of £8,400 should be allocated between the ordinary shares and the preference shares which he received by virtue of the takeover.