I need to keep better track of my finances with my new job, as i can claim for basically everything, lunch, dinner, fuel.... i want to be able to keep my business claims separate from my personal spending.
I only have 1 credit card at the moment, which is always, without fail, paid off in full every month. Its a Marriott Reward Card (backed by Halifax), and i like its scheme as its £1 a point, and that translates to free nights at the hotel.
I'll continue to the Marriott card for all business expenses as that will be quite high each month, but i need a new separate card for my spending. So any of my own fuel, food, xbox games

trips out and so on...
But what to get? I can't have another Marriott one as they said i am only allowed 1

My credit rating is excellent, in fact better than excellent (according to the Halifax Mortgage Advisor) Also i am not interested in any of this balance transfer stuff or interest free credit as everything is paid off at the end of the month, i need something which has a decent points / rewards scheme?