É possível que um cidadão do Reino Unido precise de um visto para uma viagem à UE em novembro?

A Comissão Europeia publicou o seu Aviso sobre viagens entre a UE e o Reino Unido após a retirada do Reino Unido da UE em novembro 2018 e o atualizou mais recentemente em julho 2019.

Afirma que:

In view of the uncertainties surrounding the ratification of the Withdrawal Agreement, persons who plan to travel (for private or business reasons) from the United Kingdom to the EU (and vice-versa) on the withdrawal date or thereafter, ... are reminded of the legal repercussions, which need to be considered when the United Kingdom becomes a third country.

Subject to the transition period provided for in the Withdrawal Agreement, as of the withdrawal date, the withdrawal of the United Kingdom has the following consequences ...

Portanto, minha interpretação é que as condições estabelecidas são aquelas que existirão permanentemente, sendo apenas potencialmente modificadas no curto prazo se houver um acordo de retirada. Fontes secundárias (aqui: CNN) chegaram à mesma conclusão.

Ele continua (seção 2.1, página 5):

UK nationals ... will be subject to thorough checks of all entry conditions for third country nationals upon entry.

The entry checks on UK nationals will include verification of:

• the possession of a valid travel document for crossing the border; the document needs to have a validity of no more than ten years, and shall be still valid for three months after the intended departure from the Member States;

• the duration of the stay:

  • for short stays in the Schengen area, UK nationals will be subject to limitations as regards the authorised duration of stay within the Schengen area (with a maximum of 90 days in a 180-day period);
  • for long stays, they will in principle require a residence permit or long stay visa issued by national authorities, under the national rules;

• relevant databases with a view to verify:

  • the identity and the nationality of the third-country national and of the authenticity and validity of the travel document for crossing the border, and in particular:
  • if an alert has been issued in the Schengen Information System (SIS) for the purposes of refusing entry and to check possible threats to public policy, internal security, public health and international relations;

• the purpose (e.g. tourism or work) and the conditions of the intended stay (e.g. accommodation, internal travels);

• the existence of sufficient means of subsistence (i.e. having sufficient means to pay for the intended stay and return travel).

Com saídas de caixa:

Please note that UK national passports issued prior to the withdrawal date remain valid travel documents.

E:

The EU has exempted, as part of its Brexit contingency actions, UK nationals from the requirement to be in possession of a short-stay visa (“Schengen-visa”) when crossing the external borders, where the intended duration of the stay in the Schengen area is 90 days within a 180-day period. A continued exemption from Schengen visa will require that nationals of all EU Member States are equally exempted from UK short-stay visa requirements, following the visa reciprocity principle.

Então, meu entendimento é:

• contanto que a estadia seja por dias 90 ou menos dentro de um período de um dia 180, não é necessário visto;
• haverá questionamentos prolongados na fronteira, mas semelhantes aos que você enfrentaria ao visitar qualquer outro país; e
• atualmente, esse é o caso, independentemente de um acordo ser acordado.

Advertências comuns, é claro: sou apenas um observador de poltronas, como a maioria de nós, e na política as coisas podem mudar muito rapidamente.