UK to Finland (and back) by road during COVID-19

Finland has no border control at all when arriving from Germany, only from Czechia, France, Luxembourg, Poland, Portugal, Spain and Sweden (among internal Schengen borders).

The Finnish border agency has stated that, where there are no border controls, no restrictions apply.

The 14-day rule quoted by Mark doesn't apply in Finland.

So you're all good.

More info HERE

There are still restrictions on individuals travelling from the UK to Finland up to August 11th

• here a source will be welcomed Source: Finnish Border Guard

In general, the quarantine rules apply to where you were during the previous 14 days.

From your description you are coming from the United Kingdom, transiting through France, the Beterlux countries and Germany.

Without a reliable Finnish source stating explicitly that travelers from the United Kingdom are exempt from the 8 cases per 100,000 previous 14 days rule, assume that a 14 day quarantine will be (at least) recommended.

---

Latest news, dated 2020-07-08
The Finnish Government bases its decisions on easing border control and restrictions on the incidence of COVID-19 in the country. The limit value is a maximum of eight new cases of the disease per 100,000 persons in the previous 14 days. The next alleviation to border control and restrictions will come into effect on 27 July.

United Kingdom: 13.8 cases per 100.000 previous 14 days

As of 13 July, border control and restrictions are lifted and also leisure travel is possible between Finland and Andorra, Austria, Belgium, Cyprus, Germany, Greece, Hungary, Italy, Ireland, Lichtenstein, Malta, the Netherlands, San Marino, Slovakia, Slovenia, Switzerland and the Vatican. Leisure travel to Finland has already been possible from Denmark, Iceland, Norway and the Baltic countries.

Essential, work-related and return travel is possible from all Schengen and EU countries as well as the UK. Except for those countries named above, self-isolation for 14 days upon arrival is recommended.

---

Nope, it varies too wildly for such a statement to be appropriate. Finland certainly doesn't apply it; it's all about where you're arriving from currently, and this has further been confirmed to me by the national border control unit via e-mail.

None of the countries below suggest that the last country you were in is what counts. Some, but not all, say that the point of departure within a 14 day period is what counts.

Common sense should tell you that someone coming from a high infected area can avoid a quarantine just because they were within a low infected area in the last stage of their travel.

United Kingdom

You’ll still need to self-isolate if you’ve visited or made a ‘transit stop’ in the previous 14 days in any country that is not on the list.
...
The 14 days begin from the date you left that country.

Germany

The place of departure is decisive in regard to whether it is possible to enter Germany, not the nationality of the person wishing to enter.

Regardless of the possibility to enter the country, Germany still has a quarantine requirement in place in all federal states on the basis of the Protection against Infection Act (Infektionsschutzgesetz) for those returning to and entering Germany from regions designated by the Robert Koch Institute as risk areas. The quarantine requirement also applies across the board (with the exception of transit passengers) for travellers with an important reason for travel.

United States

With specific exceptions, foreign nationals who have been in any of the following countries during the past 14 days may not enter the United States.

Canada

Compliance and enforcement of the Quarantine Act

• required to acknowledge that you must:
  • isolate for 14 days if you have symptoms of COVID-19 or
  • quarantine (self-isolate) for 14 days if you do not have symptoms

Finland

2.2. External border traffic from certain countries to the extent that entry is restricted Travel between Finland and Bulgaria, Croatia, Romania and the United Kingdom and Monaco is allowed with similar restrictions as at internal borders as follows:
...
Self-quarantine is recommended for those arriving in Finland. Passengers arriving in Finland are informed of the Finnish hygiene and safety distance instructions.

Denmark

The following countries will remain “orange” due to the incidence of new infections or local entry restrictions and significant quarantine requirements:

Ireland, Malta, Portugal, Romania, Sweden and the UK.

Netherlands

Which travellers need to self-quarantine on arrival in the Netherlands?

• Countries within the EU, the Schengen area and the United Kingdom:

Only travellers from Sweden, Romania, Bulgaria, 2 areas in Spain (Segrià and La Mariña-Lugo) and 1 area in Portugal (Vale do Tejo, this includes Lisbon) and 1 area in the United Kingdom (Leicester), are strongly advised to self-quarantine for 14 days on arrival in the Netherlands.

---

Sources:

• Practical Information for Travelers to Finland during Corona Pandemic — VisitFinland.com
• COVID-19 situation update for the EU/EEA and the UK, as of 19 July 2020
• BMI - Press - Revised entry restrictions on entry from third countries as of 17 July 2020
• Entering the UK - GOV.UK
• (Denmark) New travel advice model for European countries takes effect
• Guidelines for border traffic during pandemic from 13.7.2020 - The Finnish Border Guard
• FAQs about tourism in the Netherlands and COVID-19 measures | Coronavirus COVID-19 | Government.nl
• Coronavirus disease (COVID-19): Travel restrictions, exemptions and advice - Canada.ca
• Travelers Prohibited from Entry to the United States | CDC