How long has the UK been in economic recession?

I would like to know how many times in the past 100 years the UK has been in a recession; recession being a decline in Gross Domestic Product (GDP) for two or more consecutive quarters.and a reference to any info if you have it,i found some text on the telegraphs website but it didnt clearly state if the 4 dates given were 2 concetitive falls in GDP: 1948, 1978, 1981, 1992 were the 4 dates given.Please expandI would like to know how many times in the past 100 years the UK has been in a recession; recession being a decline in Gross Domestic Product (GDP) for two or more consecutive quarters.and a reference to any info if you have it,i found some text on the telegraphs website but it didnt clearly state if the 4 dates given were 2 concetitive falls in GDP: 1948, 1978, 1981, 1992 were the 4 dates given.Please expandI would like to know how many times in the past 100 years the UK has been in a recession; recession being a decline in Gross Domestic Product (GDP) for two or more consecutive quarters.and a reference to any info if you have it,i found some text on the telegraphs website but it didnt clearly state if the 4 dates given were 2 concetitive falls in GDP: 1948, 1978, 1981, 1992 were the 4 dates given.Please expand