Short answers, pulled from the story.
Record Retailer was the only music trade newspaper for the UK record industry, published from 1959 to 1972. It covered both record labels and dealers, and its weekly sales chart was recognised as the official national chart by the Official Charts Company for the period from 1960 to February 1969.
Record Retailer first published its top 50 singles chart with the issue of the 10th of March 1960, the same week it switched from a monthly to a weekly publication.
Record Retailer was founded in August 1959, with Roy Parker as its founding editor. Parker died on the 27th of December 1964.
The Official Charts Company recognises Record Retailer's listings as the official national chart from March 1960 until February 1969, when a standardised UK chart was established through the British Market Research Bureau.
Record Retailer was relaunched on the 18th of March 1972 as Music Week. Before that relaunch, it had been known as Record and Tape Retailer since January 1971.
Record Retailer changed its name three times. Shortly after its August 1959 launch it became Record Retailer and Music Industry News; on the 5th of October 1967 it reverted to Record Retailer; in January 1971 it became Record and Tape Retailer; and finally on the 18th of March 1972 it was relaunched as Music Week.