Raspberry, blueberry, lemon cake recipe

[RubyTrees]

I was at Chiddingstone Castle in Kent last Sunday and had the most amazing raspberry, blueberry and lemon cake in their tearoom - it was so beautifully light and bursting with flavour and was easily the best cake I'd eaten for a very long time.

I'd love to make something similar but have only found this so far:
www.rockrecipes.com/lemon-drizzle-cake/

Before I try it, I was wondering if anyone had a tried-and-tested similar recipe they wouldn't mind sharing?