they might come back and invest with their hard earnd money.
They have been saying that for almost 10 years and so far it simply hasn't happened. The Poles in the UK all say they will go back but hardly any of them do or will. They have mortgages in the UK, pensions, children in the education system but most importantly (within a monetary based society) jobs and careers. If they go back and invest money what next?
Its so sad to see such a beautiful area go to waist.
Define waste, a beautiful area is a beautiful area, developing it could be termed as a waste.
Is there any investments for the future?
Yes lots, awareness and education is the key. Try not to think in terms of profit but more about sustainability about how humanity intends to survive long term on this planet.