The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
The Barnsley Chronicle[3] and Yorkshire Post[2] date the start of cake manufacturing at the Lyons Bakery (later Manor Bakeries/Mr Kipling) Carlton plant to 1975, without a more precise day recorded.
Corroborates 1975 as the year the Carlton site began operating as the largest bakery in Europe at the time.[1]
States the Barnsley factory opened in 1975 and has produced festive treats since.[1]
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