Paying into multiple ISA types with different providers

Hi,

I'm hoping someone can help shed some light on a confusing (for me) situation.

I have two ISAs, a cash ISA with Nationwide and an IFISA with Funding Circle. I set-up and paid into the IFISA recently (i.e. within this tax year) and today attempted to pay into the cash ISA. However, Nationwide told me I couldn't because although I can spread my £20k limit across multiple ISA types, they must be with the same provider if they are both to be paid into within the tax year.

I was pretty confused by this, given that Funding Circle state that you can spread your £20k allowance across different types of ISAs with no mention of a single provider being an issue. Indeed they only offer one type, so that would make all their literature very misleading if true. I've tried speaking to HMRC, who pointed me to the Financial Ombudsman, who were no help whatsoever.

Therefore, I'm looking for some clarification: is it possible to pay into two different types of ISAs within a single tax year, with different providers?

Any help most appreciated.

Thanks,
Chris