I have recently planted a hedge made up of common laurel and cherry laurel does this matter at all, it wasn't intentional and only realised once I had googled the names they were two different types of laurels?
The only difference I noticed was the leaves are slightly bigger on what I thought was a common laurel?
Probably better grown
pandp is right about them being different common names for the same thing
There are dozens of clones of Cherry Laurel with varying sizes of leaf, you may have two different clones.