Thank you for your question
My name is ***** ***** I have been a family lawyer for more than 30 years
This is not an illegal eviction and the police will not be interest in what is a domestic dispute where (to date) no criminal offence has been committed.
However the fact is that you do in fact have the right to return to the property whenever you wish - as does your wife who has matrimonial home rights allowing her to live in the property.
You need to try and discuss matters with your ex using family mediation
If that fails then you will need to apply to the court for an occupation order so that the Judge decides who lives in the property
The fact that you each have a child in your care will makes this a difficult decision and the issues of what alternative accommodation is available to each of you will be a major part of the decision.
With regard to the car it is a matrimonial assets and you are both entitled to use it
Please ask if you need further details