I fly a Phantom 3 quadcopter (or UAV) - I hate the word drone - for fun/amateur film making but as a retired professional helicopter pilot I hope I'm responsible enough to know where not to fly it. NATS have brought out an excellent app for Android and iOS called Drone Assist which graphically shows all kinds of restricted/prohibited airspace. There is also a 'Fly Now' option where you can file a flight report with NATS and they will create a temporary circle around your GPS position so others know you are operating there.
There is also a very good unofficial website - and in one or two ways better than the NATS app - which shows the same airspace:
No Fly Drones but how many amateur UAV operators will know what some of the terms such as MCH CTR:118.575 SFC-3500ALT mean!