owner Photobox plans to join the swathe of retailers floating on the stock market.

Photobox, which owns the online greetings card retailer which sells personalised cards and mugs, plans to list before the end of June, it is understood.

Photobox investors include venture capital funds Highland Capital Partners and Index Ventures. It has appointed JP Morgan, Jefferies and Numis as advisers.

It is thought to be valued at between £400m and £500m. This would be as much as 28 times the £19.7m EBITDA it generated in the 12 months to April 2013, according to the Financial Times.

Sales jumped 13% to £148m in the 12 months to April 2013, and operating profits hit £7.1m.

The plans come after McColls completed its IPO as Poundland, Pets at Home and have all officially begun the process of floating on the stock exchange in the past two months. Others looking at joining the stock market include online fashion retailer