Who are these 70s UK chart toppers?
 

Who are these 70s UK chart toppers?

Can anyone please tell me who these 70s chart toppers are?

Sorry about the picture quality but a better picture isn't available

Thanks

ttp://i286.photobucket.com/albums/ll108/hpeake666/quiz311_comp.jpg

I couldn't add the h on http because it wont let me post a link!