Yes. If you are using your Standard Account click on the ‘Withdraw’ button and on the next page you can select the option to ‘Transfer to my ISA account’. If you are in your IFISA account and wish to transfer funds out you can follow the same process but check the ‘Transfer to my Standard account’ option.
PLEASE REMEMBER, REGARDLESS OF THE TAX BENEFITS, CAPITAL IS AT RISK
Whether investments are held within a IFISA or in a general account, they are not covered by the FSCS; the government backed deposit insurance scheme that protects bank deposits including Cash ISAs.