The name has no correlation to plant sap, it's short for Brixton, the district in London. I'm not British or from there, it's from The Clash song Guns of Brixton :p
Anyways, there's not really any other info I can find about which tikka model name corresponds to the Beretta name “Compact Light” but based off pictures and specs, I think it's just what Tikka calls the Compact. Given that it's a T3 I think it's safe to assume that the action and bolt are the same as all the others, though.