At last you are seeing the problem, by those cheap resources you mean labour, the cost of production and the fact we priced ourselves out of the market so manufacturing just collapsed leaving us surviving on service and financial / banking. Without large scale manufacturing the best you can sell are ideas and designs. At some point the chinese could do the same and find that they can manufacture goods cheaper elsewhere and then we become relevant again.
Since 1990 the share of the UK economy attributed to services has grown from 70% to 81%, while that attributed to manufacturing has decreased from 17% to 9%. Similar to France and Spain. Even in much vaunted Germany, manufacturing now only accounts for 18% of GDP.
The reasons for this are unsurprising - Chinese economic reforms in 1978 transformed their economic output. They had the advantage of low labour and energy costs, limited regard for H&S etc, and a government committed to supporting economic growth internationally.
The UK willingly (as did most developed economies) imported copious volumes of Chinese manufactured goods. Had we relied upon the UK manufacturing for products (TVs, kitchen appliances, tools, now cars etc), prices would have been higher and unaffordable for many. We are the architects of our own manufacturing sector decline through chasing low prices.
Reliance on imported goods is a vulnerability - although the UK is anyway incapable of supplying all materials required. The standard of, or quality, of living is now dependant on services, not the material goods, that we use - eg: healthcare, education, entertainment, retail, etc.
I worked in manufacturing and engineering industries for 20 years. The group had a special steels division who proudly boasted they never lost money during the 1960s, 70s, or 80s - achieved by never investing.
By the 1990s with plants full of obsolete equipment they had no prospect of ever again competing internationally. Their largest site is now a retail park. Traditional manufacturing industry had no future in the UK - high end engineering where science and brain power dominated had potential.
Whether the UK will ever again be pivotal in world trade is debateable. The days of empire upon which the sun never set are firmly gone. Global leadership is transient - Greek, Roman, Chinese, UK, have all shone and later failed.
Back to the politics - will the UK prosper better as part of an integrated Europe or independently - personally I strongly favour integration.