Firstly you can search locally choosing a florist near to where you live or close to the place the wedding or reception is taking place. Its likely you will want to meet the florist at their shop, studio or agreed meeting place before you commit.
Perhaps you know someone who has recently got married and want to find more information about the florist they used and would recommend to you. Maybe one of your other wedding suppliers could know a good wedding florist that they have previously worked with and would vouch for them.
Often if you are getting married at a popular wedding venue you can ask them if they have a list of wedding florists that are regularly used there.
Local wedding fayres are events where you can meet the wedding florists and see some real examples of their wedding flowers work and photographs of other weddings. Many florists will allow you to contact previous wedding flowers customers where you can get an review of the wedding florists work.
WeddingFlorist UK has a list of thousands of UK wedding florists where you can get your wedding flowers. Florists come in all sizes and many now are studio or home based. Use the Wedding Florist directory to visit the web site or Facebook page of the florists and draw up a shortlist of those you may wish to contact.
Remember many wedding florists cover large areas and you are not always restricted to obtain your wedding flowers from the florists closest to you. Indeed many wedding florists will cover counties and some nationwide.