Location of Nick's flat and the watchers' lair.
Apols for them being so long; blame Google Maps. The watchers' lair hardly changed...
http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=cabbell+street&sll=53.800651,-4.064941&sspn=12.4489,28.256836&ie=UTF8&hq=&hnear=Cabbell+St,+London+NW1,+United+Kingdom&ll=51.518574,-0.166866&spn=0.001599,0.003449&t=h&z=18&layer=c&cbll=51.518494,-0.16697&panoid=Yog2be2cFstDmhbj3uXonQ&cbp=12,255.4,,0,-6.75
http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=cabbell+street&sll=53.800651,-4.064941&sspn=12.4489,28.256836&ie=UTF8&hq=&hnear=Cabbell+St,+London+NW1,+United+Kingdom&ll=51.518574,-0.166866&spn=0.001599,0.003449&t=h&z=18&layer=c&cbll=51.518494,-0.16697&panoid=Yog2be2cFstDmhbj3uXonQ&cbp=12,133.48,,1,-18.23