https://www.gov.uk/working-abroad
At the moment you don't need a work visa for EEA countries.
If it did change the probable worst would be this...
The standard requirements for a European employment visa are as following:
- Application Form. Fully completed and printed twice. Do not forget to sign both copies at the end!
- Two identical photos. These photos should be taken within the last three months, according to the common Schengen visa photography criteria.
- Valid passport. Your passport should be no older than ten years and valid for at least three more months, on the date you plan to exit the Schengen territory. Make sure it has at least two blank pages for the visa sticker.
- Roundtrip flight reservation. This should indicate the dates and flight numbers of entry and exit from the Schengen area. Here you can learn more about how to book a flight reservation for EU visa application!
- Travel medical insurance. Covering any medical emergency with hospital care and travel back to one’s native country due to medical emergencies, up to 30,000 euros. Insurance must be valid in all Schengen countries and purchased before picking up the visa.
- Proof of Accommodation. A document that shows where you will be residing in the Schengen Area, i.e. rent agreement.
- Employment contract. An employment contract signed between you and your future employer, residing in the Schengen territory.
- Proof of Academic Qualifications. As diplomas, certificates, grades’ transcript etc.
- Proof of language knowledge. Most countries want you to fit in even if you are planning to work there only per one year. That is why many of them will ask you to meet a specific level of knowledge of their official language.
Apart from learning some of the host country language (sensible thing to do anyway) what bit of that would you find hard if you had a job to go to ?