With reference to the reply to question 2426 on 13 September 2018, (a) what number of (i) trains, (ii) coaches and (iii) locomotives have been vandalised (aa) in each month since 1 October 2018, (b) on what date did each incident take place and (c) what are the relevant details of the investigations that followed each incident, particularly with regard to the (i) outcomes and (ii) recommendations of each specified investigation?