Thanks for your question.
The basic position is that the legal title to the property has already been disposed to the transferee, so the transferor would have no right to change the locks and restrict the transferee's access in any way.
The transferee could simply prove ownership to a locksmith by downloading official copies of the title and showing this to them with evidence of identity. The locksmith would then attempt to change the locks but if the transferee kicks up a fuss they may or may not stop depending on the locksmith themselves.
If no locksmith will change the locks then the transrferee would have to go to court but it seems to me that the issue would be better raised between the solicitors already dealing with the matter, rather than going over their head straight to court (judges do not like people hastening themselves to litigation) - this is what you are paying them for after all.
If this has been useful please kindly click accept so that I may be rewarded for my time. If you do not click accept your money stays with the site and I do not receive any credit for the time I have taken to answer your question.
I will answer your follow up questions you may have.
DISCLAIMER: Answers from Experts on JustAnswer are not substitutes for the advice of an attorney. JustAnswer is a public forum and questions and responses are not private or confidential or protected by the attorney-client privilege. The Expert above is not your attorney, and the response above is not legal advice. You should not read this response to propose specific action or address specific circumstances, but only to give you a sense of general principles of law that might affect the situation you describe. Application of these general principles to particular circumstances must be done by a lawyer who has spoken with you in confidence, learned all relevant information, and explored various options. Before acting on these general principles, you should hire a lawyer licensed to practice law in the jurisdiction to which your question pertains.
The responses above are from individual Experts, not JustAnswer. The site and services are provided “as is”. To view the verified credential of an Expert, click on the “Verified” symbol in the Expert’s profile. This site is not for emergency questions which should be directed immediately by telephone or in-person to qualified professionals. Please carefully read the Terms of Service (last updated February 8, 2012).