Final answer:
The exact percentage of UK revenue from oil and gas in 1978-9 is not provided in the reference material; further research into historical financial records would be required to answer this question accurately.
Step-by-step explanation:
The question surrounding what percentage of UK revenue came from oil and gas in 1978-9 delves into the historical financial aspects of the United Kingdom's natural resource income during that time period. Unfortunately, the provided references do not contain the exact percentage for the UK revenue from oil and gas for the year 1978-9. Although the references discuss energy production, consumption, and the breakdown of energy sources across different sectors and countries, they do not specify the revenue figures for the UK's oil and gas sector in that specific fiscal year. To accurately respond to this student's question, additional research focused directly on UK government financial records from 1978-1979 would be necessary.