Britain's Prime Minister Boris Johnson speaks during a meeting with Germany's Chancellor Olaf Scholz (not pictured) inside 10 Downing Street in London on April 8, 2022. (TOM NICHOLSON / POOL / AFP)

LONDON - British Prime Minister Boris Johnson will on Thursday try to switch attention to the issue of illegal immigration and away from angry calls for his resignation after he was fined for breaking his own COVID-19 lockdown rules.

Johnson was fined on Tuesday for attending a gathering in his Downing Street office for his birthday in June 2020 when social mixing was all but banned under rules his government had introduced.

ALSO READ: UK's Johnson urged not to be 'gung-ho' with COVID-19 plan

Opposition politicians said it was the first time a serving prime minister had been found to have broken the law and demanded Johnson quit

Opposition politicians said it was the first time a serving prime minister had been found to have broken the law and demanded Johnson quit. 

In a speech on Thursday, he will try to move the focus away from his own behavior to targeting illegal immigration, an issue popular with many in his party and one that has been a hot topic with the public for years, and which helped the campaign for Britain to leave the European Union.

Last year, more than 28,000 migrants and refugees crossed from Europe to Britain, many in small dinghies, and Johnson will announce plans to tackle the people smuggling gangs and increase British operations in the Channel, his office said.

It added that Home Secretary (interior minister) Priti Patel would also announce details of "a world-first migration and economic development partnership" with Rwanda.

ALSO READ: Boris Johnson must show statesmanship and seize opportunities with China

"Before Christmas 27 people drowned, and in the weeks ahead there may be many more losing their lives at sea, and whose bodies may never be recovered," Johnson will say according to his office. "Around 600 came across the Channel yesterday. In just a few weeks this could again reach a thousand a day."

He will add that he accepted the migrants were seeking a better life but their dreams were being exploited by vile people smugglers.

"So just as Brexit allowed us to take back control of legal immigration by replacing free movement with our points-based system, we are also taking back control of illegal immigration, with a long-term plan for asylum in this country," he will say.

READ MORE: UK PM Johnson refuses to resign over lockdown parties

The government has been struggling to come up with solutions as the number of Channel crossings has increased.

A previous idea for the British navy to turn the boats back was rejected by the military, while it has also looked at housing asylum seekers on disused oil rigs, or in countries such as Moldova, Papua New Guinea and its remote overseas territories in the south Atlantic, according to newspaper reports.