Will I be able to convert my Basic account (GIA) to an ISA?

[ToeInTheWater]

This might be an obtuse question. If you start on Freetrade with a free account (outside an ISA), can you “upgrade” later and move into an ISA account?

Assuming you didn’t have sufficient funds to take you above your capital gains threshold in the early years.

[Rat_au_van (Emma)]

Yes. There are several threads and blogs about ISAs , just search at the top coz there’s a few options
You’ll need to resell them an rebuy in the ISA