Hi, I worked in the claims department of a large life assurance company many moons ago.
You need to decide on how large a lump sum (sum assured) you would like to leave for your kids and does the sum assured need to remain the same or do you want it to reduce as your kids get older and maybe less dependent on you.
You probably want to look at term assurance, I.e., you pay a monthly premium and if you die within the term of the policy the sum assured is paid out. If you survive to the end of the term the policy expires and nothing is paid out.
There are a few different types of term assurance - level and reducing. Level is more expensive as the sum assured remains level throughout the term of the policy, e.g., sum assured is £50k on day one and still £50k at the end of the term. Reducing term assurance means the sum assured reduces each year, e.g., year one it’s 50k, year two it reduces to £45k, year three £40k and so on till it’s at zero.
Premiums for life assurance really depend on your age, health, amount of cover and type of policy you need. Generally the older you are and the poorer your health is the more expensive it is to have life cover. Also the higher the sum assured the higher the premium.
As suggested above, suggest you check on Money Expert for quotes.