The cheapest life insurance is the Death in Service Benefit contact your admin wallahs and keep hitting them until they sort you out.
It is worked out as a % of your basic pay 0.37 I think and then split to be paid direct from your pay each month as an AVC. Roughly pays out about 4 X basic salary.
It will pay out if you croak whilst you hold an ID card, even if you hang yourself with telephone flex, with an orange in your mouth and dressed in stockings (for senior Bluebloods too).
If you have any snags getting your admin wallahs to do something useful e-mail me and Ill get you the gen.
I have mine running scared!