earlier we spoke to ian acheson a former prison governor who raised concerns about hmp weyland, whichre masood served time. we were concerned about hmp wayland asa we were concerned about hmp wayland as a place that had an environment that was conducive to radicalised behaviour. he can't be drawn on the details there, but we did draw the general conclusion from our research and our analysis that the prisons outside the high security estate, prisons like wayland which are a medium secure facility did not possess the capability or the capacity to fully understand the threat of radicalisation. alexandra mckenzie is outside new scotland yard. i notice one or two floral tributes have appeared there. i don't think we are expecting any further police updates this morning, are we? no, that's right. there have been floral tributes here for pc keith palmer and at this time yesterday we had an update, but we're not expecting that this morning. as the investigation enters its third day, a massive investigation involving hundreds of officers who are gathering as much information as possible to pie