Random, but I've tried brewing Young's Special Bitter with both WLP033 and WY1768 (multiple times), both of which are supposedly the Young's strain, and have not been crazy happy with any of them. Much too clean, no real top cropping ability, and lacks the characteristic ethyl heptanoate note of the real stuff. Fast forward, kegged a bitter made with WLP030 this week and first taste was "holy **** this tastes like Young's!"
The mouthfeel of WLP030 is also terrific, will be interesting to see how it ages, but I definitely plan to use it to brew some Youngs clones.