LHR Frequencies?

Hey,

As I’m jetting off to LHR in around 3 weeks and as I’m a avid airband scanner user I would appreciate it if anyone could point me in the right direction for LHR frequencies (Clearence, Twr, Ground etc.)? And if anyone could please tell me some frequencies too for the various sectors, like for the MID area/DVR area, director, approach etc.

Cheers 😀
Flex 35