What will we need for driving in the EU after Brexit?

I know I'm not the only one going to Europe over half term who is concerned as what precautions to take when we travel out while in the EU and return after a probable Brexit. What will be the changes for...

What are the implications of a no deal Brexit when driving to an EU country?

What are the implications of a no deal Brexit when driving to an EU country?

Will I need an international permit to drive in the EU after Brexit?

I'll be driving to France in May 2019. Will I be able to use my UK driving licence or will I have to get some sort of international permit?

When we leave the EU, will we need to put GB stickers on our cars if we drive in the EU?

When we leave the EU, will we need to put GB stickers on our cars if we drive in the EU?

Are dash cams banned in some countries in Europe?

I'm thinking of getting a dash cam hard wired into my car. Due to travelling in Europe I've read that some countries don't allow them. Could you clarify the position in this case?