The video below is really good for (1) locating coastal defences on the Holderness coast and giving you great Place Specific information (PSI). (2) It also talks clearly about the advantages and disadvantages of different defences and finally (3) it explains about the sustainability of each method
However, the exam question mentioned is for a different board and therefore I would recommend watching up to about 3:50.
Those of you doing the higher paper could try the 2014 question 7(d) worth 8 marks. It is about discussing “the costs and benefits of using hard engineering to reduce the risk of cliff collapse” The full exam paper and resources can be found here. As an exam tip you really need to concentrate on what the word DISCUSS means here – you need to talk about the advantages and disadvantages to get yourself the higher marks for this
If you are doing the foundation paper there was a very similar question that year, though it was worth 6 marks instead; it asked “explain how hard engineering can reduce the risk of cliff collapse”. To access that 2014 paper click here