Great, thanks.

Just in case anybody visits this post with the same problems - It's now sorted and working. Basic issues were:
1 - I did not set the parameters in the MyConfig.h files correctly, especially I needed to uncomment the inclusion feature!
2 - The fritz diagram for the LED 's is incorrect, if you build the gateway with the LED's you need to switch the GPIO pins to ground not to vcc as shown.
Regards

David

What do you think, should i go straight for a jumper or start with a sock pattern?

I have managed to get a working system by using Arduino Mega with the NRF24 (the one with the Aerial Connection) running the serial sketch - connected to a RPi2 running Domoticz and connected to the Arduino by USB.
This seems an expensive way to sort out a gateway so I will persevere with trying to find why I cannot get the other versions up and running but at least now I have a system - knitting will have to wait!!
Thanks for the help, much appreciated.