It says she is not a a member or ordained, but it does imply she has attended the centre, just not recently. They acknowledge she is a mitra or friend of the community.
Wikipedia says she is a member of Triratna Buddhist Community, but not a member of the order.
Arguing about whether Suella Braverman is Buddhist or not wasn't something I expected to do today.
Regardless, if she is Buddhist, she's doing a fucking terrible job of it
Apparently not:
https://thebuddhistcentre.com/londonbuddhistcentre/suella-braverman-triratna-buddhist-order-and-london-buddhist-centre