You can file for divorce in the U.K. as you live here. You can file for divorce based on the irretrievable breakdown of the marriage and 5 facts namely:
2) unreasonable conduct
3) abandonment (requires 2 years separation and one party to have left the other with no contact or support)
4) 2 years separation (if both parties agree to divorce)
5) 5 years separation (if one party disagrees to the divorce)
You can apply online here: https://www.gov.uk/apply-for-divorce
It costs £550 to apply.
In terms of property, Upon separation you will need to determine your matrimonial assets and your non-matrimonial assets, as it could make a difference to your Financial Settlement. Matrimonial assets are financial assets that you and/or your spouse acquire during the course of your marriage. This differs to non-matrimonial assets, which are financial assets acquired either before or after your marriage. However, matrimonial assets typically include things such as the family home, pensions and savings. It doesn’t really matter who put the money forward or who accumulated the wealth. When you’re married, the law in England and Wales considers that any assets you acquire also belong to your husband or wife. Non-matrimonial assets typically include things like inheritance, family businesses and property purchased before the marriage or after separation. Matrimonial and non-matrimonial assets matter when it comes to divorce and separation because you and your ex will need to divide your finances between you. The arrangement that you reach must be fair and reasonable to each person. Matrimonial assets will, by their very nature, be shared out between you and your spouse during divorce. Non-matrimonial assets are a little more complicated. Often you can request that they be excluded from the Financial Settlement. But this request might not always be granted. This might be because the non-matrimonial asset was used somehow in your marriage.
Finally, in relation to the children you would need to come to an arrangement about contact and access but if you cannot reach an agreement you will ask the court to make an order. I trust this assists