The UK will begin talks on a new cooperation treaty with Germany as the Labor government seeks to "restore" its relationship with Europe.
Keir Starmer, who is in Berlin for meetings with German Chancellor Olaf Scholz, said the deal was part of an attempt to "reverse the direction of Brexit".
10 Downing Street said the agreement would cover areas such as energy security, technology and science.
From there they added that it will also cover access to the other side's markets and trade in the North Sea.
After Berlin, Keir Starmer will travel to Paris, where he will meet French President Emmanuel Macron and attend the opening ceremony of the Paralympic Games.
Starmer's office said they hoped the new deal with Germany would be concluded by early next year.
Although detailed plans were not released, discussions on improving market access are expected to focus on areas such as helping firms certify their products and providing more information about tenders.
This will build on the already agreed defence pact between the two countries, which is due to be finalized in the autumn.
In that agreement, announced last month, the two countries pledged to jointly buy more military equipment and facilitate its use by each other's armies, as well as to increase cooperation in areas such as cyber warfare.
Britain's prime minister has pledged to build closer economic ties with Europe, including a "much better" trade deal than the one negotiated by Boris Johnson at the end of 2020.
His Labor government wants to strike deals with the EU to reduce border checks on food products, ease paperwork for touring artists and increase the recognition of professional qualifications, which will make it easier for some professionals to work abroad.
It also wants a security pact with the EU, as well as a new deal to return failed asylum seekers.
It is not yet clear whether Brussels would accept significant changes to the existing Brexit trade deal with the UK, which is due to be renegotiated in 2026.
10 Downing Street reported that the Prime Minister and Olaf Scholz will discuss joint efforts to tackle illegal migration by further sharing intelligence on trafficking gangs.
Ahead of the visit, Starmer said the UK had a "once-in-a-generation opportunity to transform its relationship with Europe".
He added that cooperation with Germany and France would be "crucial" in terms of migration and boosting the UK's economic growth.
"We need to turn our backs on Brexit and repair the broken relationship left by the previous government," he added.
As well as Scholz, Starmer will meet German President Frank-Walter Steinmeier and the heads of energy engineering group Siemens Energy and defence firm Rheinmetall, which makes vehicles for the British army.
Starmer, 61, a former human rights lawyer and attorney general, supported Britain remaining in the EU during the 2016 Brexit referendum and was once Labour's Brexit spokesman. | BGNES
