I just replied to the LPA thread and thought a separate thread on wills would be better.
It is very easy when trying to write a will to put something which is very clear to you but ambiguous to others. Take this example: "I leave my estate to be divided equally between Mr A, Mrs B, Miss C and Mr and Mrs D.
Mr and Mrs D are not a single legal entity - they are two individuals. The way you have worded things means that they would both be entitled to a fifth share, as would the other beneficiaries.
If you don't want that to happen, you should amend the wording to stipulate that Mr A, Mrs B, Miss C each get one quarter of your disposable estate, with the remainder divided equally between Mr. and Mrs. D.
It also helps to include at this stage a provision for what happens if one or more of these people pre-deceases you. Then you can relax.
My intention was to point out how easy it is to be ambiguous and I think I achieved that.
My wife and I were the executors of this particular will and, unfortunately also Mr & Mrs D. After discussion with the other beneficiaries we decided to avoid possible legal action by settling on 4 equal shares rather than 5. The amount involved wasn't (in our estimation) sufficient to cause conflict.