I live in England and there is a restaurant in my work that cooks pork. Can I eat in that restaurant?

Praise be to Allah, the Lord of the Worlds; and blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.
You may eat without any objection the foods, snacks, etc. that do not contain meat, and are free from impure ingredients like alcohol.
If the foods contain meat of lawful animals or its components, and the meat is Halal, i.e. slaughtered by Muslims or by the People of the Book, then such foods are also lawful to be consumed.
If those foods contain meat of animals, which are unlawful for us, such as pork, or meat of animals not slaughtered in the Islamic way then eating such foods is not permitted.
Know also that the utensil, the plates and glasses used for eating or drinking should be free of the remains of forbidden meats and drinks.
In such circumstances if you can prepare your food yourself, no doubt, that would remove all kinds of doubts.
Allah knows best.