RE: PrimaryBid2 Feb 2021 18:40
You can do. This is from PrimaryBids FAQs:
Can I make investments through PrimaryBid via my ISA or SIPP?
Unfortunately, you can't invest ISA or SIPP funds via PrimaryBid due to HMRC restrictions that are out of our control.
The alternative is to buy the shares from us with a debit card and transfer them to a General Investment Account for the same broker where you hold your ISA or SIPP. You can then do a "Bed & ISA", a process where you sell the shares from your investment account and then immediately buy them back with ISA or SIPP funds. There is however a tax liability on any gain and probably costs incurred from your broker for dealing. You will need to contact your broker in regards to this.