Strikes Mr. Biggs-Davison asked the Secretary of State for Northern Ireland how many strikes took place in Northern Ireland in 1974; how many of these were official and how many unofficial; how many working days were lost during that year, and how these figures compare with the figures for 1971, 1972 and 1973, respectively. Mr. Orme The figures for industrial disputes, connected with terms and conditions of employment, are as follows: ------------------- | | ------------------- |Official | ------------------- |Unofficial | ------------------- | | ------------------- |Working days lost| -------------------