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Arttu Rajantie

@artturajantie

Finnish cosmologist and particle physicist with two passports. Professor of theoretical physics at Imperial College. Chair of the Finnish Science Society in the UK. School governor. Rejoiner. #RejoinEU #FBPE https://profiles.imperial.ac.uk/a.rajantie

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15.11.2024
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Latest posts by Arttu Rajantie @artturajantie

European Movement UK has launched a petition calling for the UK to join the EU single market. Six years outside our largest trading partner has meant more barriers, more costs and lost growth for British businesses. It is time to repair the damage. Sign the petition and demand a reset with Europe. Sign the petition.

European Movement UK has launched a petition calling for the UK to join the EU single market. Six years outside our largest trading partner has meant more barriers, more costs and lost growth for British businesses. It is time to repair the damage. Sign the petition and demand a reset with Europe. Sign the petition.

Today, European Movement UK have launched our petition calling for the UK to join the single market. Europe is the largest trading bloc in the world, and joining the single market would remove barriers to trade, support growth of British businesses and strengthen cooperation with Europe.

10.03.2026 12:20 πŸ‘ 88 πŸ” 38 πŸ’¬ 3 πŸ“Œ 2

Today marked the completion of the highly successful CONNECTS-UK @connects-uk.bsky.social project, which brought together several European research diaspora organisations in the UK, including @finscisocuk.bsky.social. It created a solid basis on which our co-operation will continue.

17.02.2026 19:39 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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These cuts to physics research will be a disaster for UK scientists – and for our standing in the world | Jon Butterworth If plans by the UK’s science funding body go ahead, we won’t be able to benefit from Britain’s membership of Cern and other large international projects, says Jon Butterworth, professor of physics at ...

These cuts to physics research will be a disaster for UK scientists – and for our standing in the world | Jon Butterworth www.theguardian.com/commentisfre...

16.02.2026 17:29 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Advanced Fellows Response to UKRI Investment Approach

The future of fundamental physics research in the UK is under serious threat because of the massive government cuts to STFC funding. Please read this open letter by advanced fellows.
advancedfellows-openletter-stfc.github.io/index.html

10.02.2026 06:34 πŸ‘ 3 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
Sadiq Khan: My ultimate goal is to reverse Brexit. London Mayor believes it will happen in his lifetime and wants to rejoin single market in meantime. 9 February.

Sadiq Khan: My ultimate goal is to reverse Brexit. London Mayor believes it will happen in his lifetime and wants to rejoin single market in meantime. 9 February.

A recent poll by Opinium, commissioned by European Movement UK, found that 75% of Britons favour joining the Single Market to lower taxes. Rejoining would be a practical step towards economic renewal and a more confident role in the world - we must act soon to prevent any more damage to the country.

09.02.2026 08:00 πŸ‘ 148 πŸ” 45 πŸ’¬ 5 πŸ“Œ 6
Screenshot of EMUK sign-up page

Screenshot of EMUK sign-up page

So close to 27,000 members of @europeanmovement.co.uk!

Make sure you’re part of the community.

πŸ‘‰πŸ‘‰ www.europeanmovement.co.uk/membership

28.01.2026 09:35 πŸ‘ 121 πŸ” 56 πŸ’¬ 2 πŸ“Œ 2
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European Movement UK nearly at 27,000 members!

Join the community now to boost the campaign to bury Brexit and join the EU.

β€”> www.europeanmovement.co.uk/membership

28.01.2026 00:33 πŸ‘ 183 πŸ” 72 πŸ’¬ 6 πŸ“Œ 1
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The Telegraph just released a video talking about the EU's aims to become a superpower, and er, they have the UK as members...

26.01.2026 09:37 πŸ‘ 106 πŸ” 26 πŸ’¬ 8 πŸ“Œ 4
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European Movement European Movement UK is the UK's largest grassroots organisation fighting Brexit's damaging impact on jobs, workers' rights, and trade. We campaign for closer UK-EU relations, restored freedom of move...

After my first in-person European Movement UK @europeanmovement.co.uk Council meeting yesterday, I am really looking forward to the year ahead. Geopolitics makes joining the EU even more important now. We will make it happen but we need help, so join the movement here:
www.europeanmovement.co.uk

25.01.2026 22:36 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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British people know that visa free travel/living/working/studying is good for everyone.

23.01.2026 15:59 πŸ‘ 16 πŸ” 9 πŸ’¬ 0 πŸ“Œ 0
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Become a Member of the European Movement Join the movement for a European future

Join European Movement UK today:

21.01.2026 17:58 πŸ‘ 8 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Dan O’Brien, chief economist at the Institute of International and European Affairs, says it cleanly. Britain is weaker outside the EU, and Europe is weaker without Britain, and Brexit has handed advantage to the bullies who see allies as leverage.

20.01.2026 10:29 πŸ‘ 185 πŸ” 80 πŸ’¬ 6 πŸ“Œ 1
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The UK cannot build our security on unpredictability - our safest and most stable path forward lies with our European neighbours. Full statement is linked below.

19.01.2026 15:03 πŸ‘ 310 πŸ” 111 πŸ’¬ 4 πŸ“Œ 5
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UK to welcome Erasmus students again from 2027 The deal covers the 2027-28 academic year, and marks a reversal from Prime Minister Boris Johnson’s post-Brexit withdrawal from the scheme.

UK to welcome Erasmus students again from 2027
felixonline.co.uk/articles/uk-...

22.12.2025 14:31 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Which science experiment would I like to see done if money was not an issue? Read my answer in the latest @newscientist.com:

11.12.2025 09:05 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This is exciting. Heavy ion collisions generate the strongest magnetic fields in the Universe in which magnetic monopoles could be produced by the dual Schwinger mechanism (see doi.org/10.1103/Phys...). There are now three experiments searching for them at the LHC: MoEDAL-MAPP, ATLAS, and ALICE.

17.11.2025 16:57 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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European Movement European Movement UK is the UK's largest grassroots organisation fighting Brexit's damaging impact on jobs, workers' rights, and trade. We campaign for closer UK-EU relations, restored freedom of move...

I am delighted to share that I have been elected to serve on the council of the European Movement UK @europeanmovement.co.uk for the next two years. Thank you everyone who voted. And if you are not yet a member, now is the time to join!
www.europeanmovement.co.uk

15.11.2025 15:25 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The deadline for voting in the European Movement UK @europeanmovement.co.uk elections is this Friday 14 November. If you are a member, don't forget to vote. If you are not, join!

12.11.2025 12:51 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Freedom of movement is always discussed in terms of immigration, but ending it had a much bigger effect on emigration: The number of British citizens moving abroad (to any country) fell by nearly 50%. #Brexit
(Source:
ons.gov.uk/peoplepopula...)

11.11.2025 17:39 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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I am standing in the elections for the European Movement UK @europeanmovement.co.uk council. If you are a member, please vote (for me or one of the other great candidates) using the link you received by email. If not, you should join!
(Photo by Betty Zapata, courtesy of
@neweuropeansuk.bsky.social)

05.11.2025 10:58 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1

It is ridiculously expensive to come and work in the UK, and it is hurting scientific research.

25.10.2025 21:22 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This analysis from The Royal Society highlights an extremely important issue facing the UK R&D sector.

22.10.2025 10:08 πŸ‘ 4 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0
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The cost of a visa for a researcher moving to the UK is 22 times that of international average Royal Society is warning that the high upfront costs are putting off talented researchers

The cost of a visa for a researcher moving to the UK is 22 times that of international average: www.chemistryworld.com/news/the-cos...

25.10.2025 21:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Hei kaikki!

We are finally here on Bluesky, and have lots of exciting things planned for the upcoming year, so do give us a follow!

To get us started, this Friday (17.10) we are hosting a welcome meeting at the Star Tavern (SW1X 8HT) from 4:30pm. All Finnish & Finnish minded researchers welcome!

13.10.2025 14:00 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Scientists charged too much to come to work in UK, says Royal Society Combined upfront cost of the five-year Global Talent Visa and the Immigration Health Surcharge stands at Β£5,941

Scientists charged too much to come to work in UK, says @royalsociety.org
www.ft.com/content/7144...

22.10.2025 19:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Rachel Reeves pushes for EU youth migration scheme ahead of Budget The chancellor calls for an 'ambitious' deal as she looks to boost growth ahead of the 26 November Budget.

Good news:
Reeves pushes for EU youth migration scheme ahead of Budget
www.bbc.com/news/article...

27.09.2025 17:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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UK students get chance to study in Europe from January 2027 under new Erasmus deal The EU is pushing for a rapid agreement for Britain to rejoin the student exchange scheme

I hope this will now finally happen:
UK students get chance to study in Europe from January 2027 under new Erasmus deal
inews.co.uk/news/politic...

26.09.2025 08:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Rachel Reeves signals wider reset of EU relations Labour has ruled out rejoining the EU but may be open to alignment on areas such as farm and food exports.

The #Brexit "reset" talks are starting soon. Make sure the government knows what you want from them.
www.bbc.com/news/article...

10.12.2024 19:05 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Imperial College London, Theoretical Physics Full service online faculty recruitment and application management system for academic institutions worldwide. We offer unique solutions tailored for academic communities.

Imperial College London is hiring a Postdoctoral Research Associate in theoretical cosmology/quantum field theory from 1 October 2025. Application deadline 15 December.
academicjobsonline.org/ajo/jobs/29340

03.12.2024 19:32 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Sure, but complaining about this proposal is not helping. It just makes it easier for the UK government to keep rejecting it.

02.12.2024 16:50 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0