Moonpig is in exclusive sale talks with online photo business Photobox, which is interested in acquiring the online greetings card retailer.
It is thought a sale could fetch Moonpig founder Nick Jenkins as much as £100m, according to The Mail on Sunday.
Photobox is owned by private equity firm Index Ventures, which also invests in Skype and Betfair. The online photo business has been expanding aggressively and currently operates in 15 countries.
Moonpig turns over £40m a year and is one of Britain’s fastest growing companies.