Now that I've made that disclaimer, YES you can buy from the UK. Financing will be tougher - are you bringing cash? If so, then that alleviates most of the challenges. My advice would be to contact a local agent there who can get more specific answers from a local title/closing company.
If you don't get an answer here within about 12 to 24 hours, email me directly (email@example.com) and I will connect you with an agent I know in that area - although Detroit is a big place and if you have a specific area or property in mind, then let me know that so I am sure I am connecting you to the right agent.
Next... "foreclosure"... I put together a pretty comprehensive blog so you'll have a clue what to expect. Make sure your agent knows foreclosures - test their knowledge with some questions. I will admit there are variances, but generally speaking most of what you'll learn in the blog is very accurate, even now, about 6 months after I originally wrote most of it.
Best of luck! And, if you decide to instead consider investing near Washington DC, give me a call!