I second the notion of term life insurance, (having just fallen foul of a dodgy endowment life policy which fell outside the endowment false selling legislation and lost a five figure sum): it's cheap and cheerful to get you through the early years of kids/mortgage etc.
But don't forget it covers death only:
Consider the effect that serious injury either taking you off work for , say 6 months, or leaving you permanently disabled and unable to work, might have on your income and make provision for that too.
Cusco