It is unfortunate that with such a long separation (which is unfortunate in itself) that a separation agreement was not entered into. This would have provided evidence of what was agreed and could have contained a clause that your wife would not make any claim on after acquired property.
The difficulty you have is that on divorce a court can do more or less anything. Thus should your wife choose to make claims when a divorce petition is eventually presented, the whole position at that time must be considered. This will take into consideration the distribution which has already taken place, your position in having acquired a share in a new property and whatever your wife's financial position may be.
You ask what you can do about this. The answer is absolutely nothing. However what has happened with you setting up a new family is absolutely normal and to be expected. You will not be penalised for it and my expectation is that it will make absolutely no difference to the divorce settlement. In that you will be looking simply for an order that you and your wife having distributed the family assets between yourselves all further claims arising out of the marriage are dismissed.
Click on any Q to read the answer.
• Get a divorce
• Have contact with my children
• Make a small claim
•Write a letter of claim
•Obtain a Grant of Probate
•Get legal advice and help with my case
•Make a Will
•Change my Name
•Prepare a legally binding agreement
• Sever a Joint tenancy
• Prepare a Partnership Agreement
• Sell a Jointly owned Property
• Appoint a Guardian for my children