Hi Mim45,
Firstly, you obviously need to go for an instant access account if you need the funds soon. Perhaps, a notice account with a short period would also be okay?
Have a read of the
instant access and notice account best buy thread.
Decide the level of risk per bank you are willing to take. The normal advice is not to exceed 100,000 EUR per bank because anything over 100,000 EUR is uninsured. However, sticking to this rule, will involve a lot of hassle for you as you will need to open 6 bank accounts. Also, you will struggle to find 6 good paying instant access accounts.
A way around it might be to put half the amount in Rabo, who have the highest credit rating here and split the other half among other banks.
Therefore, if you definitely need instant access, one option might be:
95,000 EUR into KBC Smart Access (interest rate drops on the entire amount above 100k and you need a buffer for interest).
100,000 EUR into PTSB Bonus Booster (provided you will not make more than 2 withdrawals).
100,000 EUR into Nationwide UK Easy Access.
285,000 EUR into RaboDirect On-Demand Savings Account.
Just a suggestion, maybe you think 285k is too much to have in one bank.