FOI003645 FOI Highways

Under the Freedom of Information Act 2000 I request the following information. Please treat "communications" as including emails, Teams or other chat messages, text or WhatsApp messages held in connection with council business, and notes of telephone calls or meetings:
1) All communications between Cllr Geoff Hill and RBWM officers/related contractors/consultants in relation to the lowering of the speed limit on the A308 between Monkey Island Lane and the M4 motorway bridge from 40mph and 30mph
2) All copies of the formal decision taken to reduce the speed limit, including the recommendation of RBWM officers and Thames Valley Police in relation to the proposal, and the justification by the cabinet member for not following that recommendation
3) All copies of the advice/response received by RBWM from Thames Valley Police in relation to the proposal
4) The cost of the proposal from a revenue perspective in relation to studies commissioned, officer time and associated costs charged to revenue when implementing the decision
5) The cost of the proposal from the capital budget in terms of its implementation - signage updates, road markings etc
6) Any assessment as to the effectiveness of the speed limit reduction on this stretch of road by either RBWM or Thames Valley Police which would justify the statement by Cllr Hill that it hadn't worked (RBWM Full Council 22nd September)