there was an acceptable level. where you don't talk normally, that grass culture being embedded. what we saw with this crime is that lots and lots of people on both - sides of that criminal line were wanting to come - forward and speak to us. but until he was caught, thomas cashman was still terrorising some within the community. he was causing that fear and that intimidation and putting people off. the investigation has shown that once he was charged, people felt more confident and comfortable to come forward. the number of guns being fired on merseyside has fallen significantly over the last decade, though last year there were five deaths in as many months. and cases like olivia�*s highlight the risk of any bullet being fired. i don't know how many people were harmed as a result of me putting firearms on the streets, and no doubt people were harmed, and it's something i massively regret. zacharias mcgrath was part of an organised crime gang in liverpool, jailed for violence and gun offences.