How to use an Arduino Ethernet Shield with the Nordic Semiconductor nRF51-DK

The Nordic Semiconductor nRF51 Developer Kit, an mbed.org enabled micro-controller, is the first of its kind from Nordic Semiconductor that is compatible with the Arduino UNO rev3 hardware standard – however it lacks any form of on-board Ethernet connectivity.
To figure out exactly how to utilise the Arduino Ethernet Shield and give the nRF51-DK Ethernet support