No. Changing your name — by deed poll, marriage, or any other legal process — does not automatically cancel or invalidate your will.
However, there will be a mismatch between the name in your will and your legal name at death. Your executor will need to prove to the Probate Registry, banks, and other institutions that the two names belong to the same person. The standard way to do this is to produce your deed poll alongside the will.
To avoid any complications, the best approach is to write a new will in your new legal name. This removes all ambiguity and is straightforward to do. Alternatively, keep your deed poll stored with your existing will so your executor can find both documents easily.
Read our full guide: Does Changing Your Name Invalidate Your Will?
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