I will be very brief. The one thing that worries me about this is that it may not make much difference. Very often, people will find another weapon. It is very difficult to have something that cannot be used in some way. If you use rigid polycarbonate or other plastics, they can still be jumped on and broken. If they are rigid, they will still present a sharp edge of some sort, so you may find that you have spent a lot of money to not a huge effect, but it sounds good. When it comes to bottles, I believe that the recent Ig Nobel awards rewarded some research by someone who had found out whether it was worse to be hit over the head with an empty bottle or a full one. This may be of some use but I doubt it.
Policing and Crime Bill
Proceeding contribution from
Earl of Erroll
(Crossbench)
in the House of Lords on Tuesday, 13 October 2009.
It occurred during Committee of the Whole House (HL)
and
Debate on bills on Policing and Crime Bill.
Type
Proceeding contribution
Reference
713 c160 
Session
2008-09
Chamber / Committee
House of Lords chamber
Subjects
Librarians' tools
Timestamp
2024-04-21 13:15:05 +0100
URI
http://data.parliament.uk/pimsdata/hansard/CONTRIBUTION_583549
In Indexing
http://indexing.parliament.uk/Content/Edit/1?uri=http://data.parliament.uk/pimsdata/hansard/CONTRIBUTION_583549
In Solr
https://search.parliament.uk/claw/solr/?id=http://data.parliament.uk/pimsdata/hansard/CONTRIBUTION_583549