Eastern Europe is old news as far as manufacturing is concerned, most that went in are already out and in China, Vietnam Philippines, one strong exception is car manufacturing which is very bulky and expensive to ship across the world, so they talk about "near shore" but even Eastern Europe is now inflating very fast especially salaries like 10% per year (by law) as countries want to grow into euro convergence
No big bucks to be made there anymore, the strategies move fast and always changing but most big manufacturers no that and spread themselves and position them selves strategically, to future proof future changes
Also do you know that the UK outside of Eastern Europe is one of the lowest wage cost areas of Europe, no wonder they like UK to do business and on top of that less regulation, Eastern Europe is an absolute nightmare