It said the brands are "resurging under new ownership and direction as online-only brands, with their great heritage intact".
Analysts at Peel Hunt said: “Boohoo has delivered a strong set of full-year results, as outperformance in P4 takes revenues and profits ahead of expectations. The results really are impressive, with strong growth in actives, orders, frequency and basket.
“Unlike most, boohoo has seen current trading in April return to growth after the initial shock in March. This means our working assumption of 25% declines this quarter looks overbaked.
Caroline Gulliver, an equity analyst at Jefferies, said Boohoo had "once again exceeded expectations" with its full-year figures.
She said: "Encouragingly, Boohoo has continued to grow sales in March/April as the company has adapted to the Covid-19-impacted environment.
Boohoo this week apologised after selling £5 masks came baring messages such as "Eat, sleep, isolate, repeat" or "If you can read this, you are too close". It has withdrawn the items from sale.