Hey, I'm doing the Applied Law BTEC subsidiary diploma (with the first year doing the diploma) and I can tell you now it is 100% worth it. I got accepted into all 5 of my unis with my offers (Exeter x 2, York, Kent and Manchester), it doesn't look bad at all I promise, it's generally quite manageable you only have to do work throughout the year but I've finished everything on my applied law course now which means I can thoroughly revise my other subjects (psychology and politics) so trust me it helps massively with reducing workload. Plus if you get distinction on every single task which is quite easy as long as you work in lesson you will get a distinction star which all the uni's I applied to take it as an equivalent to an A* and you can say it requires individual work to make it seem more suitable for uni.