Did both Speedy Keen and Liam Gallagher have solo careers? 
Speedy Keen:  He wrote "Something in the Air" (1969) for the band, which reached No. 1 in the UK Singles Chart and released two solo albums. Liam Gallagher:  He rose to fame as the lead singer of the rock band Oasis, and later as the singer of Beady Eye, before performing as a solo artist after the dissolution of both previous bands.
yes