Stock transfer to spouse's FT account

See Transferring shares to spouse's freetrade account

There is a strong use case to transfer my holdings to my spouse, to optimize on capital gains allowances that both of us have.

Other brokers have a form to fill out to execute such a transfer (example - https://a.c-dn.net/c/content/dam/publicsites/1458301250052/igcom/uk/files/account/160300_IGM_UK_Share_Dealing_Spouse_Transfer.pdf)