The golden combination of current accounts and credit cards for us is currently:
Santander 123 for interest on up to 20K and cashback on the DDs.
Set up all DDs from this a/c
Nationwide FlexPlus for the package account benefits (Breakdown, phone & travel insurance for £120 per year). Make it a joint a/c so that you’re both covered.
Barclaycard VISA & Amex CC for cashback on all spend. All UK spending except the DDs goes on this.
(Under review as they’ve dropped the cashback to 0.5% on both cards so will be looking for a better one)
Halifax Clarity CC for all overseas spend and overseas cash withdrawals.