The LNER Encyclopedia

At Great Northern house on Euston road opposite Somerstown Goods yard in the early 1970s and now the site of the British Library what were the three Control areas?.

1.Kings Cross to Wood Green 2. New Southgate to ???? 3.??? to Stoke box I have forgotten?.

Your missing boundary was Huntingdon No.1 / Hunt. No.2 Mickey.

At some previous time there had been a fourth Section area (the label for the Controller's circuit was still above its connecting key in 1977), which I believe included Grantham, and so I expect the extent of some of the other areas would have been different then.