1. No one has any idea if there will be less red tape or not, what the new red tape will be or how much it will cost to comply with whatever red tape the UK government introduces. In some respects there will, without question, be more red tape. Co-productions between Britain and EU countries are common and one reason for this is that currently it doesn't matter where in the EU co-producers are located. This will obviously have to change and there will have to be "red tape" to govern these types of relationships, where currently there is none. Regardless of whether there will ultimately be less red tape or not though, the not knowing is a very serious problem because it means budgeting and therefore the amount of funding required cannot be calculated accurately. It's going to take years, probably many years, to sort all this out and provide the certainty required. In the meantime ...
2. I can't see how you can possibly arrive at this statement, the exact opposite will be true! Point #1 is going to adversely affect overseas investment, plus of course all the current EU funding will obviously disappear. In addition, it won't be known for years what restrictions (taxes, etc.) will be levied by the EU and other countries on exported British products (inc. Film/TV products). Not knowing this and therefore not being able to project profits is obviously another serious deterrent to overseas investors.
3. Even the leave campaign agreed that leaving the EU would cause the British economy to tank, the only dispute is for how long and how far it would tank. How, with a tanking economy, are taxes going to reduce and grants going to increase? If anything, taxes are going to have to increase and grants decrease. With a shrinking or at least slowed economy, it's virtually impossible to imagine that the UK will even be able to plug the funding shortfall from the EU, let alone actually increase the current pot of UK Film/TV funding!
4. That puts you in a minority of about 1! Why do you think the UK Film/TV industry came out so heavily in favour of remaining in the EU? Why do you think that UK TV/Media companies were some of the biggest losers on the stock market after referendum? Just because you don't see a problem doesn't mean there isn't one, especially as everyone in the industry and those who invest in the industry are saying the exact opposite. I agree though, there isn't "a" problem, there is now a whole raft of problems! It's not a question of "if" those problems are going to badly affect the UK Film/TV industry, it's only question of how badly.
G