Can I open an ISA if I have a Lifetime ISA?
You can open and subscribe to any combination of ISAs.
This includes Cash, Stocks & Shares and Innovative Finance, together with a Lifetime ISA providing that you do not exceed the Lifetime ISA annual allowance of £4,000 or the overall ISA allowance (£20,000 in 2017/18 and 2018/19). Please also bear in mind that you can only subscribe to one ISA of each type per tax year. For example you cannot pay into two different Cash ISAs in the same tax year.