You have an automatic copyright to the photograph and you can apply for an injunction unless they take it down.
You need to send them a formal cease and desist letter to warn them of your intentions unless they remove it (and give them 7 days to do so from the date of your letter).
A template “cease and desist” letter is available at https://www.lawdepot.co.uk/
If you go to the search box in the top right corner of the site, it will bring up a list - you want the "general" letter.
You can use your own letter if you wish - it just has to make it clear this is a cease and desist letter, that you own the copyright to the photograph and you therefore demand they stop using it without your permission - and that if they do not within 7 days you will apply to the court for the injunction and seek your costs.
That letter may well be enough to stop the conduct - as an injunction is a serious legal remedy.
Assuming they ignore you, you are then faced with having to apply for an injunction to your local county court. You can either do this yourself or with a lawyer. An injunction is a last resort but nevertheless is a legal remedy available to you in this situation. You will need to retain a copy of your cease and desist letter to support the application as the judge will want to see proof you did send the cease and desist letter to the publisher.
I can direct you to law firms if you wish, assuming the letter has no effect after a week. It should work as there is no doubt about the copyright protection - the issue is whether the publisher wants to risk an injunction and a costs order against them.