BBC radio leapt into the 1970s on 4 April 1970 by relaunching Radio 1, 2, 3 and 4. Each station was given a distinct identity and prepared for changing listening patterns and the coming of commercial radio. Despite initial resistance to the changes by some listeners who remained attached to the models of the Light, Third and Homes Services, the realignment proved a success and led to bigger audiences in many areas.
Broadly speaking, Radio 1 offered pop, while Radio 2 provided light music. Both networks came together at times for shows such as Family Favourites, Junior Choice and the Terry Wogan Show. Radio 3 was the platform for classical music. It also provided drama and poetry, and during the summer broadcast a ball-by-ball commentary on cricket Test Matches. Radio 4 became the principal speech service. PM and The World Tonight - introduced with the changes - completed a line up of news programmes with Today and The World at One. New programmes - like Week Ending - sat alongside old favourites like Gardeners' Question Time.
The changes instituted ensured the main radio stations were firmly established and thrived over the following years. Their identities have been tweaked over time but have remained fundamentally unchanged.
Further reading

Radio Reinvented
Archive interviews with people closely involved in the momentous reinvention of BBC Radio in 1967
April anniversaries

Radiophonic Workshop founded
1 April 1958
The Boat Race first televised
2 April 1927
The Family first episode
3 April 1974
The Good Life
4 April 1975
New radio branding
4 April 1970
Newsround
4 April 1972
The Money Programme
5 April 1966
American Half Hour
6 April 1935
PM and The World Tonight
6 April 1970
Pogle’s Wood
7 April 1966
How Does Your Garden Grow?
9 April 1947
First episode of The Two Ronnies
10 April 1971
Launch of BBC Networking Club
11 April 1994
I'm Sorry I Haven't a Clue
11 April 1972
Blue Peter Royal Safari
11 April 1971
Citizen Smith
12 April 1977
Animal Magic
13 April 1962
Demonstration of VERA Video Recorder on Panorama
14 April 1958
After Henry
17 April 1985
Hamlet at Elsinore
19 April 1964
First night of BBC Two
20 April 1964
Play School
21 April 1964
First episode of Top Gear
22 April 1977
Children's Newsreel
23 April 1950
The Sky at Night
24 April 1957
An Age of Kings
28 April 1960
First Episode of Waggoners' Walk
28 April 1969
The FA Cup Final is first televised
30 April 1938






























