Posted: 19/07/2014 at 10:22
It's a cherry laurel (Prunus laurocerasus). I have one in my garden and the leaf and fruit in your pic's are identical to mine. They can grow to be very large indeed.
The fruit are inedible and can cause severe discomfort if eaten, but are not toxic. Here a link for further info: http://rhs.org.uk/plants/details?plantid=1541
Edit: Is it possible there are two intermingling plants here because in the first picture there are definitely leaves that are identical to a prunus, but in the second there are holly leaves (which I didn't see in my haste to post).