I'm with you all the way on cracking down on fly tipping (have you seen the carpark at Mill Hill picnic site?), but you might want to get your ducks in a row regarding the cost of litter enforcement via Kingdom Environment Enforcement Services. Any outlay will be recovered from fixed penalty notices, and then some.. They are in the business of making money for local authorities, hence why they'll nab anyone for anything they can secure a fine on.
Expect them in high foot traffic spots and shopping areas with no bins.
)