UK nationals will need a visa if they want to stay in the EU for more than 90 days in a 180-day period.
Your European Health Insurance Card remains valid until its expiry date and the plan outlined in the agreement is to replace these with a UK Global Health Insurance Card. There is more information to come on overseas health insurance in the coming months.
You do not need an International Driver’s Permit to drive in the EU as a UK citizen.
UK professional qualifications won’t be recognised automatically in the EU, which will make it more difficult to work in the EU, especially for those in the service sector.
It appears that UK citizens will need to apply to the individual country in which they wish to work to get any professional qualifications accepted. This may change as the agreement suggests a framework of mutual qualification recognition in the future.
There are measures which commit both the UK and the EU to maintain common standards on worker’s rights, as well as many social and environmental regulations. The UK does not have to follow EU law, but they do have to be seen to protect the rules of “fair competition”.