The initial location that was chosen was The Great Yews in Salisbury. They are in a stunning national park and would have been perfect for this shoot. A bonus factor of these woods was that all of the Yew trees are dead and poisoned so look skeletal and their sap is a dark crimson colour and seeps out of the bark, reminiscent of blood. (this is alluded to in the script)
Therefore another option was necessary.
The woods that were used in the final film were Talbot Woods, just over the road from uni, I wasn't even fully aware just how large they were and I think they will work just as well in the final cut of 'Memorial':