No, don't do that - remember your St-16 is logging every flight you make and the CAA/ police will grab that first if it comes to it, so they can find out exactly where you have been flying...
When I fly local golf course I speak to the manager first and ask (I even emailed mine to get agreement before I even rocked up) and he is usually cool if there aren't too many people playing (there rarely are on weekdays) and I offer to share the footage of course. However I can only fly on my local golf course because its location also happens not to convene any other CAA rules like being 150m away from a built up area for example, and being able to stay a consistent 50 m away from all players at all times (30m on launch / land)...
Even with all the rules and restrictions stacked up against us here in the UK, it is STILL possible to find good, safe , repeatable fly-sites, if you do your homework on Google maps first, and one of the various sites that shows NOTAMS and restricted areas. Also look up the Queens foreshore rules, which you should print out and take with you, which allow you to fly a whole load of beaches where you otherwise couldn't ! As for National Trust and English Heritage, 2 of the most biased and unfairly 'hostile-to drone-operator' organisations that exist in the world today, they will rigorously enforce, so you must be careful never to take off from their land. So find a border map, and find a take-off site right outside it, and then they can't stop you flying over into the airspace, and all those beautiful locations they guard can be yours too*...
*don't try that with nature reserves - there they really don't want you anywhere near them.