Heavens, don’t hold all the money you want to give you a retirement income in a savings account!
OP, what’s sensible really depends on your life stage, job security, whether you are in a couple, what you need to maintain your current lifestyle etc.
I’m a few years off retirement. Aiming for a year’s income in an emergency fund, a year in a savings account earmarked for the coming year’s spending, and about six years in gilts. The rest will be in shares.