1.  Loss in Buisness money:
If Britain stays in the EU it will make other countries/people want to invest in Bitain. If they leave then people woudn't want to invest in Britainn. That way they will lose 45% and 50% of their export and import.

2.   No Free Trade Negotiations: Britain will not take part in the world largest free trade negotiations between EU and the US.

3.     Loss of influence: Leaving the EU will limit Britain’s opportunity to take part in EU’s decisions concerning world affairs or in setting European laws.

4.     Impacts on the economy: Leaving EU has an impact on the economy, businesses and individuals will have a hard time raising funds for any loans etc.

5.   Increase Energy Bills: EU negotiates for energy bills for its member state, leaving EU will increase energy bills for Britain. 

6.    Less Educational Funds: EU offers support funds to a lot of educational programs in the UK. Exiting EU will have an impact on students since the Britain government regulates the costs for EU students.

7.     Less Educated Manpower: Controlling immigration by Britain will affect its economy and the society at large. Most immigrants from EU are more educated than the UK nations and can contribute up to 34% of UK finances.

8.     Reduced investment fee: Most of the jobs in the UK are due to trade with the EU making the UK receive an investment of £66 from the EU jobs.

Some people still think Brexit is a good idea here are some of their reasons:

Pros:

1.    Free International trade: Leaving the EU, Britain will be able to independently access the international trade deals. You will have an opportunity to negotiate for new deals and a chance to move goods freely.

2.     No membership cost: You no longer have to pay for EU membership fee which can stop the free movement of stuff to the international market.

3.     No more EU trade regulations costs: Exit from EU will allow Britain to set its own regulations for the members. E.g. rules on value-added tax.

4.     Reduced red tapes: Reduced policies have enabled firms to increase their productivity potential and reduce cost spend on adhering to bureaucratic policies. Consumers can also benefit from reduced cost.

5.     Lower Costs: Lower supermarket costs reduced barriers to customs and tariffs and other trade costs will save the British household £933 per year.

6.     Control immigration: The UK government will be able to control and regulate the immigration of individual in its member state.

7.     Security: The new immigration laws will make it difficult for a terrorist to enter the UK and also make it easier for the UK to deport violent criminals which is a difficult task with EU courts.

8.     Independent: Britain will have a chance to influence world decisions as an independent nation.

9. Opportunity for Companies: British companies will no longer have to follow the strict laws set by the EU.

After WW2 Winston Churchill, the British Prime Minister called for a "United States of Europe", organised and united, to prevent future wars in Europe. That seems to have worked........