Residency - Not working in spain do I need a spanish bank account?

My wife and I were granted residency recently. 

We were required to provide a transaction-level statement from our Spanish bank account, to demonstrate that we were regularly transferring sufficient funds from the UK to Spain to support ourselves.

Nobody was interested in our P60s or our UK bank account.

Ok, thanks for the reply.

Sounds like I'll have to open a non resident bank account first, which means getting a non resident certificate from the local police station and then transfer a reasonable sum into the account and apply for residency immediately after?

To apply for a non resident bank account, I'll need proof of my UK address? Which I'm currently in the process of selling and not moving to a permanent address in the UK!

Well worth knowing, Kelvin. The law only requires you to prove sufficient finances - it doesn't state that these have to be in Spain. Yet another case of the offices doing the transactions applying their own rules.

Our Spanish bank initially provided a letter summarising our position (average monthly balance, average monthly transfer etc). Our gestor told us that this wouldn't cut it, and insisted that we obtain the transaction-level statement, with a bank certification stamp on it. We couldn't just print it out ourselves. 

For residency, we also had to demonstrate that we had bought (or rented long-term) a home, and that we had purchased a suitable healthcare policy (we are below pensionable age). We already had our NIE numbers.  

Thanks for the replies.

So it's not realistic to place a transfer a large amount into a spanish bank account and then the next week apply for residency? Keeping in mind the Spanish account hasn't been opened yet.

I will also have a larger amount sitting in my UK bank account, so would have to declare it on a Modelo 720, but that amount won't count towards my capital taken into consideration for residency?

I've read elsewhere having a certain amount of capital in an account is sufficient to apply for residency, so confusing!