Here's the wording. Even though it's anonymised, I don't wish this text to appear in the public domain please...

Will of XXX

I XXX of XXX, revoke all earlier wills and declare this to be my last will (‘my Will’).

1.1 I appoint my sons <executor name 1> of <executor address 1> and <executor name 1> of <executor address 2> as my joint executors. If <executor name 1> should die before me or otherwise be unable to act for me then I appoint <executor name 2> to act as my sole executor. If <executor name 2> should die before me or otherwise be unable to act for me then I appoint <executor name 1> to act as my sole executor.

1.2 In my Will the expression ‘my trustees’ means the executors of my Will and the trustees of any trusts arising under it.

My trustees are to hold my estate on trust to retain it or sell it and:

2.1 to pay my debts, the cost of my funeral and the expenses of administering my estate,

2.2 to pay any taxes arising from my death, and

2.3 to distribute the gifts and give effect to the other beneficial intentions of my Will.

My trustees are to have all the powers that the law and my Will confer for these purposes and they are to exercise those powers with reasonable skill and care. If they need help, they are to seek professional advice and assistance.

3.1 Section 3.1

Subject as above, my trustees are to divide and pay the residue of my estate as follows:

3.1.1 50% to <beneficiary name 1> of <beneficiary address 1>, on the condition that he survives me by 30 days

3.1.2 50% to <beneficiary name 2> of <beneficiary address 2>, on the condition that he survives me by 30 days

If either of my sons dies before me or does not survive me for the period mentioned previously, leaving one or more children, his share is to be given to his child or if he has more than one child then his share to be equally shared between his children.

If either of my sons dies before me or does not survive me for the period mentioned previously, leaving no child or children, his share is to be added to the share of my other son.

BUT if all of these gifts fail then Section 3.2 of my Will shall apply instead of Section 3.1.

3.2 Section 3.2

Subject as above, my trustees are to divide and pay the residue of my estate as follows:

3.2.1 One Eighth share to <beneficiary name 3> of <beneficiary address 3>

3.2.2 One Eighth share to <charity name 1>

3.2.3 One Quarter share to <charity name 2>

3.2.4 One Quarter share to <charity name 3>

3.2.5 One Quarter share to <charity name 4>

The ‘Standard Provisions of the Society of Trust and Estate Practitioners (1st edition)’ are to apply.

I request my trustees to arrange a <xxx> cremation service for my funeral. I request my ashes to be scattered at the same place as that of my husband’s at <address>.

Date

My signature

I have signed my Will to give it effect in the presence of the two witnesses named below and both of them have signed it in my presence

Witness 1

Signature

Name

Address

Occupation

Witness 2

Signature

Name

Address

Occupation

Many thanks for your help. I'll see a Scottish solicitor as suggested.