Ummm you are talking about not negotiating - if you don't negotiate with the EU and you don't enter any trade agreement with them then WTO rules state that you have to trade at WTO tariffs - meaning vastly increased costs for the 44% of our exports we export to the EU.
With regards to research and development - one of the perks of being in the EU is that it gives us access to huge research networks and all countries have to share and collaborate their research together - this increases the effectiveness and value of the research exponentially. Leaving the EU means we no longer have access to these networks or a right to this knowledge base as a result we will either need to replicate it ourselves or pay to access it as other non-EU countries do - thus increasing costs (you may have noticed a large proportion of scientists wanted to remain).
You mention Germany - probably because of their automobile industry - but you do realise their trade deficit with us is around 6 or 7% while ours to the EU is 44%. We would suffer much more than Germany. You must also realise that it isn't just a case of convincing the Germans, we would need to convince every single one of the 27 member states to do what you want - ie give the UK more preferential terms than the EU member states themselves - no freedom of movement and free trade but no obligation to EU rules.
Why do you insist on being so insulting, patronising and obnoxious?