Can I have 5 boxes of violet and rose creams, please? 
I also quite like the rose and violet biscuits but the Toffolosssus or salted caramel ones are possibly a safer bet.
Any of their cheese straws.
The petit fours and the Christmas/seasonal iced biscuits are beautiful.
If you don't know the person's taste, it is probably best to pick one thing that is beautiful to look at (like the iced biscuits), one thing to drink (alcohol or tea, if they don't drink), then anything that is available in selection boxes or has lovely reusable packaging (tins etc).
Picalilli, truffle mayonnaise, and chocolate orange peel would be on my food hamper from hell list. But then I love floral creams and marzipan... At least the selection boxes of chocolates, biscuits, jams, teas etc are fun to try, probably have something they will like, or are great for entertaining or regifting.
If it comes in a pretty tin, I always have a use for storage 