(1965 boundaries) Essex works out as follows:
Harwich and North Essex - 10
Rochford and Southend East - 9
Clacton - 6
Maldon - 6
Saffron Walden - 6
Thurrock - 5
Witham - 5
Brentwood & Ongar - 4
Basildon & Billericay - 3
Braintree - 3
Colchester - 3
Harlow - 3
Rayleigh & Wickford - 3
South Basildon & East Thurrock - 3
Southend West - 2
Castle Point - 1
Chelmsford - 1
Epping Forest - 0 (but 8 tube stations)
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And (post-1974 boundaries) Oxfordshire like so
Witney - 7
Henley - 5
Banbury - 4
Wantage - 3
Oxford West & Abingdon - 2
Oxford East - 0
Harwich and North Essex - 10
Rochford and Southend East - 9
Clacton - 6
Maldon - 6
Saffron Walden - 6
Thurrock - 5
Witham - 5
Brentwood & Ongar - 4
Basildon & Billericay - 3
Braintree - 3
Colchester - 3
Harlow - 3
Rayleigh & Wickford - 3
South Basildon & East Thurrock - 3
Southend West - 2
Castle Point - 1
Chelmsford - 1
Epping Forest - 0 (but 8 tube stations)
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And (post-1974 boundaries) Oxfordshire like so
Witney - 7
Henley - 5
Banbury - 4
Wantage - 3
Oxford West & Abingdon - 2
Oxford East - 0