If you are married, have less than £125000 in your estate, or don't hit Inheritence Tax threshholds, you'd be better with NO will rather a DIY will.
Here is the latter part of DH's article, which was written for MN:
If you do not make a will before you die, the state will decide answers to these questions on your behalf. In most cases, savings and property will go to your husband or wife and eventually to your children, provided you have a relatively small estate. In circumstances where you have no immediate relatives, your estate will pass to your nearest blood relative, which could be distant cousins. If there are no family members, it will go to the state!
Not married?
If you are not married to your partner the law does not recognise you as a beneficiary, regardless of how many years you have cohabited. For the partner to benefit they would have to enter into complex litigation to establish their interest in the estate.
Estate worth more than £125,000?
When your estate is worth more than £125,000 the law determines that it will be split between your spouse and your children. Any residue above £125,000 will be divided into two equal shares. One share for your children and the remaining share in trust to give the spouse an income for the rest of his or her life. Upon their death it will revert back to the children. If your children are not adults this will mean a large proportion of the estate can be tied up in trust.
Can you make your own Will?
It is possible to make your own Will, but unfortunately they have become known as the ?Solicitors friend'. Solicitors make more money administering the estates of those who have prepared their own Wills rather than those prepared by a solicitor.
Inheritance Tax
Inheritance Tax or ?death duties' means that estates worth more than £263,000 will pay tax at a flat rate of 40%. The value of your estate will include the value of your home; savings, insurance policies and possibly benefits payable under pension schemes ? which can all, add up.
There are such things as spousal or charitable exemptions but without a carefully drafted will, these may get overlooked.