Boris Johnson says he will publish ‘full list of all those associated with the Putin regime’ – UK politics as it happened

5.31pm GMT

Afternoon summary

• Keir Starmer has questioned why Roman Abramovich has not faced UK sanctions over the Russian invasion of Ukraine, as Boris Johnson appeared to accept a Labour offer to strengthen a new bill cracking down on illicit assets.

• The UK defence secretary has once again ruled out a no-fly zone over Ukraine, saying it would be counterproductive. However, he warned there was a risk Vladimir Putin would start to “ruthlessly pummel” cities from the air.

• Changes to student loans in England announced by the government last week will hit lower-earning graduates even harder than first feared, costing them an extra £28,000, according to updated analysis by the Institute for Fiscal Studies.

• Peers have inflicted a defeat on government plans to send asylum seekers who arrive in the UK to other safe countries where they have a connection, PA Media reports. PA says the Lords voted 221 in favour, 172 against (majority 49) an amendment to the nationality and borders bill which would require the government to have a “formal returns agreement” with other countries before asylum seekers could be sent there.

That’s all from me for today. But our Ukraine coverage continues on our global live blog. It’s here.

5.17pm GMT

Alok Sharma tests positive for Covid after sitting alongside Johnson during PMQs

Alok Sharma, the Cop26 president, has tested positive for Covid.

I was due fly abroad this evening and as a precaution tested myself ahead of travel

Unfortunately i have tested positive for covid

I feel absolutely fine but will now isolate, and work from home, for the required period of time

— Alok Sharma (@AlokSharma_RDG) March 2, 2022

Earlier he was taking questions in the Commons, where he was beside Boris Johnson during PMQs.

Alok Sharma beside Boris Johnson during PMQs. Photograph: AFP/Getty Images