An average shift doesn't have one PC per PC (this could get confusing), more like 2 per shift and some aren't even powerful enough to run Google Maps let alone edit HAD video.
£480 sounds too cheap.
What's that you say? Editing unnecessary? I'm not sure the judge is going to be happy watching an entire day's footage for one incident.
Oh, civilian support will do that. You mean the ones Theresa May sacked to "protect the front-line" (and only worked 9 to 5 anyway; not very useful when you need to charge or release).