Where do you get courier-style top boxes for motorcycles from in the UK?
Try M&P online or GIVI online or a GIVI or Oxford stockist. Alternatively, speak to a courier/pizza delivery rider and find out where he got his.
In the UK most set top boxes are used for Freeview, the digital television terrestrial service. Set top boxes also include cable and satellite receivers so s set top box may not be a Freeview box. In the US, digital set top boxes do a similar job but as Freeview is a British service, they won't be Freeview boxes.