Three small boats carrying 35 migrants have been intercepted by the Border Force off the Kent coast as they tried to cross the English Channel.
More than 50 people were also stopped by French authorities trying to make the crossing.
The incidents bring the number of migrants detained over the weekend to more than 125.
On Sunday, 10 men and three women who presented themselves as Iraqi and Iranians were found on a rigid-hulled inflatable boat (Rhib) at about 3.35am.
At 6.54am, a second boat carrying 13 men who said they were Syrian, Yemeni, Iraqi and Palestinian was intercepted, while a third boat was stopped at 1.15pm with nine people on board.
All of those detained were brought to Dover to be dealt with by the immigration authorities.
A Home Office spokesman said French authorities dealt with several incidents, with more than 50 migrants either prevented from leaving France or returned to the country after being picked up in the Channel.
The incidents follow a total of 90 migrants being detained on Saturday aboard six boats.
More than 900 migrants have been intercepted since the start of the UK lockdown, with a new single-day record set on VE Day when 145 migrants attempted the dangerous crossing.
