It's after midnight in Athens, but that's unlikely to stop the 'No' campaign supporters from ending their celebrations...

Image source, EPA

Image source, Reuters

Image source, Reuters

This is the map of how the country voted, with almost 89% of votes counted.

Orange represents the 'No' vote, green represents 'Yes'. You will be here all night if you try to spot any green in this map.

Image source, Greek Ministry of Interior

A few more things that came from Mr Tsipras' speech on Greek television:

- He says he wants to continue negotiations with creditors

- "Our overwhelming priority will be to get banks functioning again"

- A meeting of all political parties is convened for Monday morning

Image source, AP

Well, not immediately. But a spokesman for Eurogroup chairman Jeroen Dijsselbloem says they will meet up later in the week. 

We are not far away from a result. As we stand, 85% of the votes have been counted - and the 'No' camp is in the lead with 61.5%, compared with the 'Yes' camp's 38.5%.

Image source, AFP/Getty Images

We mentioned it earlier, but France and Germany are pushing for an urgent summit on Tuesday - it was arranged in a phone call between German Chancellor Angela Merkel and French President Francois Hollande.

They're now calling for other eurozone leaders to attend - that seems likely.

Those who voted 'No' are certainly in high spirits - here's a montage of some of them celebrating across the country .

Reuters: European Central Bank policy setters are likely to maintain emergency funding for Greek banks at its current restricted level, people familiar with the matter said on Sunday, following Greece's rejection in a referendum of bailout conditions.

If that's confirmed when the ECB's governing council meets on Monday, there seems little chance the banks will be able to reopen on Tuesday, as the Greek government promised.

Image source, AP

Some breaking news coming in - Greece's centre-right opposition leader, Antonis Samaras, has stepped down.

Samaras - prime minister until January this year - was the lead voice of the 'Yes' campaign and there were immediate calls for his resignation as soon as opinion polls were released.

Chancellor Angela Merkel and President Francois Hollande want a eurozone sumit on Greece on Tuesday (Berlin)

The blogger Greek Analyst, external is a go-to source on the latest on Greece's debt crisis - so when he asks this question, you know it is a period of uncertainty ahead...

This is what the four main opinion polls were predicting as the result when the polls closed earlier this evening:

Metron Analysis : 'Yes' 48%, 'No' 52%

GPO : 'Yes' 48.5%, 'No' 51.5%

MARC : 'Yes' 48%, 'No' 52%

MRB : 'Yes' 46% to 51%, 'No' 49% to 54%

Now, with more than 71% of the votes counted, it appears these polls were way off - the 'No' camp is in the lead with 61%.

Big decision for European Central Bank's governing council. Last weekend it froze the limit on the "Emergency Liquidity Assistance" (ELA) that Greek banks could get in cash from the Greek central bank, prompting the government to impose capital controls. So will they raise the €89bn ceiling or not?

Image source, AFP/Getty Images

More again from Germany's Deputy Chancellor Sigmar Gabriel, who has spoken to Tagesspiegel newspaper.

He said Tsipras and his government were taking Greece down a path of "bitter abandonment and hopelessness."

Tsipras has "torn down the last bridges which Europe and Greece could have crossed to find a compromise," Gabriel said. "By saying 'No' to the eurozone's rules...negotiations over billions of euros in bailout programmes are difficult to imagine." 

The Interior Ministry count gives more than 61% of the vote to the 'No'-camp. It's a clear victory.