Hello.
Here's hoping someone can provide an answer.
Has BT Basic Broadband been returned to the 15gb per month usage limit or is it still unlimited usage?
all unlimited usage
All BT broadband packages have unlimited usage, any that had limits were removed during Covid and there won't be a return.
If you do have BT Basic now, you could look at the newer social tariff Home Essentials which may benefit you, previous restrictions on extra services have been removed, you can also have better fibre broadband if it's available.
BT Basic has been replace by Essential so probably worth the change