Twenty-nine migrants have been detained after three boats landed on Kent and Sussex beaches and an inflatable kayak was intercepted in the English Channel.
One boat came ashore at Winchelsea and 11 people were detained. Others may have absconded, the Home Office said.
Nine migrants were detained after a boat landed at the Leas in Folkestone.
Six men were arrested on Hastings Pier after a boat was reported in the English Channel. Three more men were rescued from an inflatable kayak.
The Home Office said those on the kayak, which was intercepted by a Border Force coastal patrol vessel, were taken to Dover.
Two of those detained at Hastings Pier had reported injuries and were taken to hospital for treatment, a Home Office spokesman said.
Of those detained, eight were children, the Home Office said.
At least 1,281 people have crossed the Channel in small boats this year.
The Home Office said more than 85 migrants who entered the UK illegally on small boats had been returned to Europe.
News From BBC