| Description | Date | Identifier | |
| Prevalent rattles in the rear exhaust suspension. | 29th Jan 1937 | Box 131 \ 4 scan0023 | |
| Faults with brakes, distributors, and camshaft covers on a Phantom III chassis. | 29th Jan 1937 | Box 131 \ 4 scan0024 | |
| Faults found on a Phantom III regarding brake binding, distributor issues, and oil leaks from camshaft covers. | 29th Jan 1937 | Box 131 \ 4 scan0025 | |
| Ongoing issue with Bentley rear brake drums rubbing and a proposed solution. | 1st Feb 1937 | Box 131 \ 4 scan0026 | |
| Condition of a Voke's air filter and the difficulty in obtaining a choked one for testing. | 1st Feb 1937 | Box 131 \ 4 scan0027 | |
| Cracking of the cylinder block at the water pump inlet on Bentley 25/30 models. | 1st Feb 1937 | Box 131 \ 4 scan0028 | |
| Blueprint detailing a modification to a Bentley 25/30 cylinder to address cracks with an extra screw. | 2nd Feb 1937 | Box 131 \ 4 scan0029 | |
| Cylinder block wear on a Bentley, attributing it to the carburettor strangling on startup and proposing a control modification. | 2nd Feb 1937 | Box 131 \ 4 scan0030 | |
| The hiring of a new driver for a 15,000-mile test in Nairobi. | 2nd Feb 1937 | Box 131 \ 4 scan0031 | |
| Leaking petrol tanks on 3½ and 4¼ litre Bentley models due to loose rivets holding the baffle plates. | 2nd Feb 1937 | Box 131 \ 4 scan0032 | |
| Blueprint showing an underneath view of a Bentley petrol tank, indicating the location of leaks. | 2nd Feb 1937 | Box 131 \ 4 scan0033 | |
| New clutch plate, oil weep, and oil consumption on London Trials Car 38-EX. | 2nd Feb 1937 | Box 131 \ 4 scan0034 | |
| Recurring complaints of rattles from the front aprons on Bentleys and requesting a permanent fix. | 3rd Feb 1937 | Box 131 \ 4 scan0035 | |
| Blueprint illustrating the source of rattles from the front tray of the vehicle. | 3rd Feb 1937 | Box 131 \ 4 scan0036 | |
| Standardization of felt washers in bell crank levers for the Phantom III rear brakes. | 3rd Feb 1937 | Box 131 \ 4 scan0037 | |
| Premature wear and rattling of hydraulic damper bearings, proposing a material change to resolve the issue. | 3rd Feb 1937 | Box 131 \ 4 scan0038 | |
| Suggesting the use of low carbon case hardened contacts for steering components, inspired by Bentley's design, to reduce wear. | 3rd Feb 1937 | Box 131 \ 4 scan0039 | |
| Spare parts, vehicle repairs, modified components, and performance issues with ignition plugs and cylinder bores. | 3rd Feb 1937 | Box 131 \ 4 scan0040 | |
| Excessive wear in hydraulic damper bearings causing rattles and proposing a material change to case-hardened steel. | 3rd Feb 1937 | Box 131 \ 4 scan0041 | |
| Issues with mixture controls, cold weather performance of trials cars, and the introduction of new sparking plugs. | 4th Feb 1937 | Box 131 \ 4 scan0042 | |
| Logistics and scheduling for preparing cars for 15,000-mile tests, including models 6B4, 3B4, and PhIII. | 4th Feb 1937 | Box 131 \ 4 scan0043 | |
| Oil changes, valve stem oil leaks, and sparking plugs for the Phantom III trial car. | 6th Feb 1937 | Box 131 \ 4 scan0044 | |
| Employee's injury and a misunderstanding of travel instructions. | 6th Feb 1937 | Box 131 \ 4 scan0045 | |
| Oil changes, valve stem oil issues, and sparking plugs for the Phantom III trial car. | 6th Feb 1937 | Box 131 \ 4 scan0046 | |
| Bentley car's oil pressure issue after braking and advice on driving conditions. | 10th Feb 1937 | Box 131 \ 4 scan0047 | |
| Notifying of a planned journey to Châteauroux. | 10th Feb 1937 | Box 131 \ 4 scan0048 | |
| Clarifying the identity of a Phantom III test car regarding a report on shock damper bearings. | 11th Feb 1937 | Box 131 \ 4 scan0049 | |
| Employee's travel to France, an attempt to intercept him, and a disputed expense claim. | 1st Feb 1937 | Box 131 \ 4 scan0050 | |
| Letter from GWH regarding an accident with car 35 EX and enclosing a report from P. Rose. | 1st Feb 1937 | Box 131 \ 4 scan0051 | |
| Note regarding travel to America and the status of cars Phantom III and 3.B.IV. | 12th Feb 1937 | Box 131 \ 4 scan0052 | |
| Bentley complaint regarding third gear trouble and the subsequent repair. | 13th Feb 1937 | Box 131 \ 4 scan0053 | |
| Bentley gearbox complaint regarding third gear trouble when hot. | 13th Feb 1937 | Box 131 \ 4 scan0054 | |
| Telegram received by telephone concerning a future call arrangement. | 15th Feb 1937 | Box 131 \ 4 scan0055 | |
| Telegram from Hancock to Roycar Derby regarding a telephone call from Robotham. | 15th Feb 1935 | Box 131 \ 4 scan0056 | |
| Confirmation of a telegram regarding a planned telephone call. | 15th Feb 1937 | Box 131 \ 4 scan0057 | |
| Dispatch of Pinion Bearings and a change in the formulation of Hi-Press oil. | 16th Feb 1937 | Box 131 \ 4 scan0058 | |
| Analysis of the most prominent customer complaints for the Phantom III model over a four-month period. | 19th Aug 1937 | Box 131 \ 4 scan0059 | |
| List of faults and ongoing investigations related to starter motors, oil consumption, clutches, and damper troubles. | 26th Feb 1937 | Box 131 \ 4 scan0060 | |
| Customer complaints and the proposed solutions for various failures. | 26th Feb 1937 | Box 131 \ 4 scan0061 | |
| Vehicle testing in France, including towing restrictions, test locations, and the performance of roll-rods. | 20th Feb 1937 | Box 131 \ 4 scan0062 | |
| Analysis of the most prominent customer complaints for the 25/30 HP model over a four-month period. | 21th Mar 1937 | Box 131 \ 4 scan0063 | |
| List of reported vehicle faults and their respective causes and cures, including issues with petrol tanks, brakes, and dynamos. | 21th Mar 1937 | Box 131 \ 4 scan0064 | |
| Faults and complaints regarding carburetters, instruments, rear anchorage, and petrol tanks. | 26th Feb 1937 | Box 131 \ 4 scan0065 | |
| Customer complaints and the corresponding actions being taken for the 25/30 HP model. | 26th Feb 1937 | Box 131 \ 4 scan0066 | |
| Various vehicle components including starting, steering, carburettors, and petrol tanks. | 26th Feb 1937 | Box 131 \ 4 scan0067 | |
| Short typed communication to Hancock regarding a meeting with Steadman. | 22th Feb 1937 | Box 131 \ 4 scan0068 | |
| Telegram from Chateauroux confirming 'GRYLLS YES' to Hancock at the Derby works. | 22th Nov 1933 | Box 131 \ 4 scan0069 | |
| Telegram received by telephone concerning a Kestrel engine bottom connection and connecting link. | 22th Feb 1937 | Box 131 \ 4 scan0070 | |
| Responding to a suggestion about deleting the cup in the valve spring top washer and proposing a new scheme. | 23th Feb 1937 | Box 131 \ 4 scan0071 | |
| Typed message from Grylls to Hancock in France, requesting a telephone call. | 24th Feb 1937 | Box 131 \ 4 scan0072 | |
| Telegram message received by telephone requesting shackle pins and packing washers. | 24th Feb 1937 | Box 131 \ 4 scan0073 | |
| Telegram received by telephone concerning the travel movements of Hancock. | 25th Feb 1937 | Box 131 \ 4 scan0074 | |
| Telegram regarding Mr Hancock's departure for Kingsbury. | 25th Feb 1937 | Box 131 \ 4 scan0075 | |
| Letter confirming the despatch of parts for car 35-EX to Paris and discussing other part updates and standardisation. | 26th Feb 1937 | Box 131 \ 4 scan0076 | |
| Internal memorandum regarding the distribution of reports on customer complaints. | 3rd Mar 1937 | Box 131 \ 4 scan0077 | |
| Requesting clarification on why Phantom III cars are expected to have shock absorber trouble after 10,000 miles. | 3rd Mar 1937 | Box 131 \ 4 scan0078 | |
| Preparation of a report on 3½ and 4¼ Bentleys. | 6th Mar 1937 | Box 131 \ 4 scan0079 | |
| Cause of rattles in rear dampers due to bearing slackness and proposing design solutions. | 5th Mar 1937 | Box 131 \ 4 scan0080 | |
| Sent from France regarding Strilux conversions for headlamps and a proposed discussion on an exhaust system. | 8th Mar 1937 | Box 131 \ 4 scan0081 | |
| Failure of an aluminized exhaust expansion box and the standardization of new Lucas headlamps for French regulations. | 9th Mar 1937 | Box 131 \ 4 scan0082 | |
| Dynamo charging failures in a 4 1/4-litre Bentley due to an electrical short. | 9th Mar 1937 | Box 131 \ 4 scan0083 | |
| Investigation into high oil consumption issues in 4 1/4-litre Bentley Cylinder Heads, finding them to be hollow. | 9th Mar 1937 | Box 131 \ 4 scan0084 | |
| Discrepancies in reports, parts fitting, and personnel instructions for various test cars. | 10th Mar 1937 | Box 131 \ 4 scan0085 | |
| Accidents related to headlamps and a misunderstanding over a front silencer lagging clip. | 10th Mar 1937 | Box 131 \ 4 scan0086 | |
| Diagram illustrating a clip mechanism with a welded lug to prevent it from slipping off a pipe. | 11th Mar 1937 | Box 131 \ 4 scan0087 | |
| The failure and incorrect supply of heat-stressed piston rings for Bentley engines. | 11th Mar 1937 | Box 131 \ 4 scan0088 | |
| Electrical breakdown on a 4¼ Litre Bentley caused by a taut cable. | 12th Mar 1937 | Box 131 \ 4 scan0089 | |
| Analysis of customer complaints for 3½ and 4¼-Litre Bentleys, detailing failures and average mileage. | 11th Mar 1937 | Box 131 \ 4 scan0090 | |
| Vehicle failures, their frequency, and average mileage at which they occurred. | 11th Mar 1937 | Box 131 \ 4 scan0091 | |
| Summary of vehicle failures, including speedometer, engine, and axle issues, with average mileage data and proposed design fixes. | 7th Nov 1911 | Box 131 \ 4 scan0092 | |
| Technical report detailing issues and potential fixes for various automotive components. | 11th Mar 1937 | Box 131 \ 4 scan0093 | |
| Faults and issues with various vehicle components including the speedometer, engine, and silencer. | 11th Mar 1937 | Box 131 \ 4 scan0094 | |
| Issues with dynamo brush noise and petrol tank leaks. | 11th Mar 1937 | Box 131 \ 4 scan0095 | |
| Follow-up memo chasing parts for a modified lubrication to Pinion Thrust scheme. | 12th Mar 1937 | Box 131 \ 4 scan0096 | |
| Despatch error for a set of parts for N. Sch. 4985. | 13th Mar 1937 | Box 131 \ 4 scan0097 | |
| 10,000 miles test and the lack of reporting on car 35-EX. | 15th Mar 1937 | Box 131 \ 4 scan0098 | |
| Bentley complaints regarding pinion oil leaks and potential solutions for wheel driver issues. | 15th Mar 1937 | Box 131 \ 4 scan0099 | |
| Inquiry regarding potential oil leakage from a 3.B.IV rear axle and the performance of recent modifications. | 15th Mar 1937 | Box 131 \ 4 scan0100 | |
| Engine oil requirements and supply for car 35-EX in France. | 15th Mar 1937 | Box 131 \ 4 scan0101 | |
| Issues with Lucas headlamps and a fractured exhaust system on various vehicles. | 8th Mar 1937 | Box 131 \ 4 scan0102 | |
| Repeated exhaust system failures and a discussion on standardization. | 2nd Jul 1936 | Box 131 \ 4 scan0103 | |
| Travel arrangements for staff in France returning to the UK for the Easter holidays. | 19th Mar 1937 | Box 131 \ 4 scan0104 | |
| Confirming overtime pay rates and Easter holiday wages for an employee. | 19th Mar 1937 | Box 131 \ 4 scan0105 | |
| Complaint about the Bentley silencer suspension system causing rattles and squeaks, requiring design attention. | 19th Mar 1937 | Box 131 \ 4 scan0106 | |
| Brief typed message to Waller in France concerning men returning home for Easter. | 19th Mar 1937 | Box 131 \ 4 scan0107 | |
| Problematic rear wheel drivers on a Bentley and the sourcing of hubs from different manufacturers. | 20th Mar 1937 | Box 131 \ 4 scan0108 | |
| Modification to the propeller shaft sliding joint and damper, requesting verification of the settings. | 22th Mar 1937 | Box 131 \ 4 scan0109 | |
| Querying the bolt size for a loose off-side rear spring anchorage bracket and providing the updated specification. | 22th Mar 1937 | Box 131 \ 4 scan0110 | |
| Simplified silencer suspension scheme for the Wraith II model. | 22th Mar 1937 | Box 131 \ 4 scan0111 | |
| Delay in receiving J. Series Bentley rear axles with modified pinions. | 22th Mar 1937 | Box 131 \ 4 scan0112 | |
| Failures in Bentley wheel drivers on the B-DG series following the introduction of Dunlop Road Wheels. | 22th Mar 1937 | Box 131 \ 4 scan0113 | |
| Contents of a parcel containing various faulty car parts sent for inspection. | 23th Mar 1937 | Box 131 \ 4 scan0114 | |
| Repairs for car 3.B.IV and issues with the water pump on car 35-EX. | 23th Mar 1937 | Box 131 \ 4 scan0115 | |
| Failure analysis of faulty wheel drivers and pinion bearings. | 24th Mar 1937 | Box 131 \ 4 scan0116 | |
| Complaints about Phantom III rear brakes binding. | 24th Mar 1937 | Box 131 \ 4 scan0117 | |
| Diagram and note regarding the clearance for Phantom III rear brake shoes. | 24th Mar 1937 | Box 131 \ 4 scan0118 | |
| Investigation into an unresolved oil consumption complaint for a Bentley B.97.GP. | 24th Mar 1937 | Box 131 \ 4 scan0119 | |
| Investigation report into a driving knock from a Bentley rear axle, chassis 105.BL. | 25th Mar 1937 | Box 131 \ 4 scan0120 | |
| Misfiring E.27-KLG plugs on a customer's car, which are running too hot. | 25th Mar 1937 | Box 131 \ 4 scan0121 | |
| E.27-KLG plugs misfiring at low speeds due to overheating. | 25th Mar 1937 | Box 131 \ 4 scan0122 | |
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