Of course TLR is going to escape at some point during the court appearance. That was the whole point of the tiny arse phone. The TAP came from the shop Neil works in which is a money laundering "fake" shop. Neil is involved with the drugs gang, either voluntarily or through blackmail.
I can't remember how the pharmacist heard the voice message from Catherine to Jo about the drugs. But it seems a bit implausible.
I think they can be traced back to him as they were still in the blister packs which have a serial number on them I guess. Perhaps that's what she wrote on her arm? The point wasn't that they were "illegal" drugs, just that they were supplied illegally without prescription.
The fact that the woman who fell through the window was registered blind is going to be relevant at some point.
I'm another one who thinks that Becky's suicide is not exactly as Catherine believes or has created in her head.
Claire - yes, she's been to one too many AA meetings and has probably killed off half her brain cells with drink and heroin. Stupid idiot.