Cherry laurel leaves yellowing and dropping off
It is normal for broadleaved evergreens to yellow and shed their older foliage in the spring. You may see some fungal leaf spots and this can be common in wet seasons like we had last year. No control is necessary. Rake fallen foliage and monitor for new growth.
See our website on normal leaf shedding http://extension.umd.edu/hgic/topics/normal-leaf-shedding