Yes. Getting married in England and Wales automatically revokes any will you made before the marriage, even if that will was written recently.
If you do not make a new will after marrying, your estate will be distributed under the rules of intestacy when you die. That may not reflect your wishes, particularly if you have children from a previous relationship or want to leave specific things to specific people.
The only exception is a will written "in contemplation of marriage" — one that explicitly states it is intended to survive a specific forthcoming marriage. These are unusual and need to be drafted carefully.
If you have recently married, you almost certainly need a new will.
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Complex estate? For blended families, overseas property, or business interests, please find a qualified solicitor.