Re: plastic enclosures
Thre are numerous plastic moulding companies in the UK, a lot who now have the initial tool cut in China or India, then brought back to the UK for final alterations and for making the parts. I have had some excellent pricing this way, also with the fine tuning being done in the UK to the tool help turn round and control over the finished product.
That said I've also used Indian and Chinease moulders, the Indian manufacturers have excellent quality (top class in for all my past jobs), good prices, but deadlines can slip; the Chinease good prices, good turnround, quality OK; hense for Chinease tools I like to have the last bit done here in the UK.
I'd use all methods depending on how critical and cost effective the design requirement is.#