Unilever Shares

I bought some shares of Unilever some 7 years ago and did not get certificates only qtly statements from my stockbroker. I have since lost touch with him but was told by my mom that Unilever still sends me bonus shares/dividend certs. Do i need to get a certificate for my shares or how does it work these days, The only evidence i have now is a bonus shares cert i got from Unilever in 2007, Any advise guyz