The simple answer to this question is yes you can have more than one ISA but you cannot open more than one ISA in each ISA category in each tax year.
So in the same tax year you could open:
• 1 Cash ISA
• 1 Stocks and Shares ISA
• 1 Lifetime ISA
• 1 Innovative finance ISA
The total ISA investment in one tax year must not exceed £20,000 (tax year 2022/23)