In November you can get a simple will written through a charity called Will Aid for a donation to charity.
If you have been meaning to get around to it, this is a good incentive, so book an appointment now! www.willaid.org.uk/will-makers
Even if you don't have much money, every parent should make a will and say who should be guardians for your children. More information here: doshandnosh.com/2013/07/will-aid/