David Cameron is holding talks with Latvian leaders in what is thought to be the first bilateral visit by a British prime minister to the country.
Ahead of a conference in Riga aimed at boosting the green and digital economies, he will meet president Andris Berzins and prime minister Valdis Dombrovskis in a bid to strengthen relations between the two nations.
The Prime Minister flew out on Wednesday night for a working dinner with seven leaders from nations inside and outside the EU, including Denmark, Norway and Sweden, ahead of the Northern Future Forum.
Mr Cameron's spokesman said the PM would be "building on the discussions" held at last year's meeting.
He added: "The idea is to bring together a series of countries that have a, to some extent, shared approach and outlook in terms of relatively open economies, global outlooks, and so a very much common theme around the global race, as the Prime Minister describes it domestically. They will be discussing areas of common interest around that.
"I think it is worth noting that it is through contacts such as these that we have, the Prime Minister has, close working relationships with governments, such as the Danish and the Swedish governments, and you saw the importance of those kind of contacts in another context recently, in the context of the EU budget negotiations.
"So there are specific reasons that bring this group of countries together but I think it also demonstrates the close working relationship the Prime Minister has struck up with a number of like-minded countries that has benefits in a number of areas."
Mr Cameron is scheduled to attend only the first 15 minutes of the forum. Asked if it was feared that might be perceived as a snub, his spokesman said: "He is a very active participant in this meeting."