| Description | Date | Identifier | |
| Suggestion to provide more spare plugs for 30-HP town cars due to issues with oiled plugs. | 19th Jun 1936 | Box 130 \ 2 scan0069 | |
| On the condition of a Bentley clutch after a 500-mile road test in London traffic. | 19th Jun 1936 | Box 130 \ 2 scan0070 | |
| Driver's illness and a request for a replacement to conduct tests at Brooklands. | 28th Jul 1936 | Box 130 \ 2 scan0071 | |
| Message from Robotham to Hancock requesting a phone call to the Experimental Department. | 28th Jul 1936 | Box 130 \ 2 scan0072 | |
| Forwarding of H.T. Leads for a Bentley Chassis B-128-GA. | 28th Jul 1936 | Box 130 \ 2 scan0073 | |
| Investigation into faulty ignition cables and the history of a shelved standardisation for improved cables. | 29th Jul 1936 | Box 130 \ 2 scan0074 | |
| Investigation into overoiling complaints on a GUL-59 chassis. | 29th Jul 1936 | Box 130 \ 2 scan0075 | |
| Oil pressure and consumption tests, including mileage and test results. | 30th Jul 1932 | Box 130 \ 2 scan0076 | |
| The performance of a Bentley clutch and a proposal to test it at Brooklands. | 30th Jul 1932 | Box 130 \ 2 scan0077 | |
| The examination of a faulty Marles steering unit from car GUL-77, detailing an oil leak, slack, and internal damage. | 30th Jul 1940 | Box 130 \ 2 scan0078 | |
| Oversized high tension ignition cables not fitting conduits and the decision to introduce new cables into production. | 31th Jul 1936 | Box 130 \ 2 scan0079 | |
| Requesting a meeting to discuss customer complaints. | 31th Jul 1936 | Box 130 \ 2 scan0080 | |
| Misfiring and clutch issues on Professor Dodds' Bentley. | 31th Jul 1936 | Box 130 \ 2 scan0081 | |
| Cover note for a report and drawings on Marles Steering from Cricklewood. | 31th Jul 1936 | Box 130 \ 2 scan0082 | |
| The failure of an end cap on a Marles Steering box due to a deeply drilled oil union hole. | 30th Jul 1936 | Box 130 \ 2 scan0083 | |
| Cross-sectional diagram of a Marles Steering assembly. | 30th Jul 1936 | Box 130 \ 2 scan0084 | |
| Ignition failure caused by an earthing wire shorting against metal. | 10th Aug 1936 | Box 130 \ 2 scan0085 | |
| Monthly report on customer complaints for the 25/30 HP model. | 10th Aug 1936 | Box 130 \ 2 scan0086 | |
| Engine issues including excessive oil consumption, poor idling, and oil pressure failures. | 10th Aug 1936 | Box 130 \ 2 scan0087 | |
| Faults and proposed solutions for noisy petrol pumps, steering issues, and oil leaks. | 10th Aug 1936 | Box 130 \ 2 scan0088 | |
| Carburetter failures, specifically a loose float anchorage screw and a sticking choke valve. | 10th Aug 1936 | Box 130 \ 2 scan0089 | |
| 'popping' engine issue on a 50 HP car and the bearing status of another vehicle. | 11th Jul 1936 | Box 130 \ 2 scan0090 | |
| Issues with wearing pads in hydraulic dampers and a request for an extractor tool. | 11th Jul 1936 | Box 130 \ 2 scan0091 | |
| Customer complaints regarding ignition failure due to a shorting lead wire from the coil to the distributor. | 16th Aug 1936 | Box 130 \ 2 scan0092 | |
| Complaint report regarding brake squeaks and inefficiency on a new Bentley chassis in Paris. | 17th Aug 1936 | Box 130 \ 2 scan0093 | |
| Monthly report detailing customer complaints for the Bentley 3.1/2 Litre model. | 18th Aug 1936 | Box 130 \ 2 scan0094 | |
| Faults and issues with new cars, covering brakes, axles, petrol pumps, clutches, and transmission. | 18th Aug 1936 | Box 130 \ 2 scan0095 | |
| Faults and ongoing issues with various car components including the dynamo, bumper, and bearings. | 18th Aug 1936 | Box 130 \ 2 scan0096 | |
| Monthly report on customer complaints regarding the Bentley 4.1/4 litre Borg & Beck clutch. | 18th Aug 1936 | Box 130 \ 2 scan0097 | |
| Customer complaints about wear on the rear road wheel driving dogs and splines for the Bentley 4.1/4 Litre. | 18th Aug 1936 | Box 130 \ 2 scan0098 | |
| Rusted petrol tank level indicator that was repaired and returned to stock. | 19th Aug 1936 | Box 130 \ 2 scan0099 | |
| Letter addressing customer complaints about the 3.5 litre car, including pump failures, vapour lock, and modifications. | 20th Aug 1936 | Box 130 \ 2 scan0100 | |
| The shipment of a replacement steering part for chassis 22-G-V, with instructions on how to avoid paying double customs duty. | 20th Aug 1936 | Box 130 \ 2 scan0101 | |
| Responding to complaints about a guard for the dynamo and engine dampers. | 20th Aug 1936 | Box 130 \ 2 scan0102 | |
| Monthly report on customer complaints for the Phantom II, detailing recurring issues and proposed solutions. | 20th Aug 1936 | Box 130 \ 2 scan0103 | |
| Ongoing technical complaints including noisy valve mechanisms, sticking throttles, ignition wire shorting, and brake issues. | 20th Aug 1936 | Box 130 \ 2 scan0104 | |
| Complaints regarding the short service life of Phantom II silencers and proposing aluminised sheet iron as an alternative. | 20th Aug 1936 | Box 130 \ 2 scan0105 | |
| Requesting an improved design for rear wheel drivers for both Bentley and Phantom III cars. | 21th Aug 1936 | Box 130 \ 2 scan0106 | |
| Complaints received in Paris on the first Phantom III. | 24th Aug 1936 | Box 130 \ 2 scan0107 | |
| Complaints for a Phantom III vehicle, detailing issues with the water pump and loose tappet screws. | 22th Aug 1936 | Box 130 \ 2 scan0108 | |
| Complaint and the instruction to manufacture a new Distance Piece part. | 25th Aug 1936 | Box 130 \ 2 scan0109 | |
| Modification to Stromberg Carburetters to improve vapour escape. | 26th Aug 1936 | Box 130 \ 2 scan0110 | |
| Hand-drawn sketch of a Stromburg float chamber needle valve. | 26th Aug 1936 | Box 130 \ 2 scan0111 | |
| The engine failure of a Bentley 8-GA Paris Trials Car, detailing the seized connecting rod bearing. | 26th Aug 1936 | Box 130 \ 2 scan0112 | |
| Response memo addressing complaints about the dynamo guard and engine dampers. | 26th Aug 1936 | Box 130 \ 2 scan0113 | |
| Responding to complaints about loose solder in a water pump and loose screws on tappet plungers for a Phantom III Chassis. | 26th Aug 1936 | Box 130 \ 2 scan0114 | |
| Steering problems, specifically end play and tightness, on a 30 HP car during the Paris Trials. | 26th Aug 1936 | Box 130 \ 2 scan0115 | |
| Failures and noise in petrol pumps, evaporation issues, and diaphragm performance. | 26th Aug 1936 | Box 130 \ 2 scan0116 | |
| Technical memo discussing rattles and design flaws in the Bentley bumper bar and spring leaf system. | 26th Aug 1936 | Box 130 \ 2 scan0117 | |
| Note forwarding a complaint from G.W.H. regarding the Phantom III Paris Trials car. | 28th Aug 1936 | Box 130 \ 2 scan0118 | |
| Issue with the front brakes on a Phantom III Paris Trials Car due to an oil leak. | 28th Aug 1936 | Box 130 \ 2 scan0119 | |
| Parts being sent to Paris for the Trials car and 22-G-V. | 28th Aug 1936 | Box 130 \ 2 scan0120 | |
| Inability to exchange a steering part due to duty paid for the Paris Trials car. | 26th Aug 1936 | Box 130 \ 2 scan0121 | |
| Querying the difference between 'inner' and 'outer' splines on the driving shafts of the Phantom III. | 27th Aug 1936 | Box 130 \ 2 scan0122 | |
| Complaint about transmission rattle in a Bentley B.226.GA, even after a new clutch was fitted. | 27th Aug 1936 | Box 130 \ 2 scan0123 | |
| Recurrent complaint about L shaped rings on a 30-HP model. | 31th Aug 1936 | Box 130 \ 2 scan0124 | |
| Inconsistent breakages of thermometer gauge tubes on the 25 HP model. | 31th Aug 1936 | Box 130 \ 2 scan0125 | |
| Complaint regarding a dynamo drive rattle on a 30-HP vehicle, chassis GTL-14, due to an issue with the aluminium coupling or rubber blocks. | 31th Aug 1936 | Box 130 \ 2 scan0126 | |
| Complaint about a broken exhaust manifold lug on a 30-HP car. | 31th Aug 1936 | Box 130 \ 2 scan0127 | |
| Carburettor jet issues causing blow-back at certain speeds and potential solutions. | 1st Sep 1936 | Box 130 \ 2 scan0128 | |
| Faults and complaints concerning Stromberg carburettors, including bent valves and floats. | 1st Sep 1936 | Box 130 \ 2 scan0129 | |
| Complaint regarding faulty ignition wires causing misfiring on a 30 HP vehicle. | 1st Sep 1936 | Box 130 \ 2 scan0130 | |
| Costs and failures of Phantom II exhaust silencers. | 1st Sep 1936 | Box 130 \ 2 scan0131 | |
| Dynamo drive rattle on a 25/30 HP chassis, detailing alterations to the rubber driving blocks. | 2nd Sep 1936 | Box 130 \ 2 scan0132 | |
| Ignition wire production, Bentley oil consumption issues, and planning for a vehicle test. | 2nd Sep 1936 | Box 130 \ 2 scan0133 | |
| Pinhole leaks found in the top tank of a 30-HP radiator. | 4th Sep 1936 | Box 130 \ 2 scan0134 | |
| Change from maconite to Helsby ignition wires, with a handwritten note questioning the quality of the new Helsby cables. | 9th Sep 1936 | Box 130 \ 2 scan0135 | |
| Instruction specifying the change of ignition cables from maconite to Helsby cables for various chassis models. | 3rd Aug 1936 | Box 130 \ 2 scan0136 | |
| Forwarding letters from Fraser Nash and By. concerning service complaints. | 14th Sep 1936 | Box 130 \ 2 scan0137 | |
| Steering and other mechanical issues with 30-HP and Phantom III vehicles. | 14th Sep 1936 | Box 130 \ 2 scan0138 | |
| Issues with faulty high tension maconite wire and conflicting instructions regarding its use. | 15th Sep 1936 | Box 130 \ 2 scan0139 | |
| Failure of petrol pumps due to diaphragm material and advocating for a new type. | 15th Sep 1936 | Box 130 \ 2 scan0140 | |
| Complaint about a sticking ammeter on a Phantom III, proposing a wiring modification for the horns. | 15th Sep 1936 | Box 130 \ 2 scan0141 | |
| The lack of complaints for the 4 1/4 Litre Bentley, but noting a new case of excessive oil consumption. | 18th Sep 1936 | Box 130 \ 2 scan0142 | |
| Brief memo regarding a repair to a 30-HP steering case with slack. | 18th Sep 1936 | Box 130 \ 2 scan0143 | |
| Faults and solutions for the Stromberg carburetter. | 18th Sep 1936 | Box 130 \ 2 scan0144 | |
| Complaints and corrective actions for a Phantom III vehicle. | 18th Sep 1936 | Box 130 \ 2 scan0145 | |
| List of vehicle faults and rectification notes for steering, brakes, servo, and clutch components. | 18th Sep 1936 | Box 130 \ 2 scan0146 | |
| List of vehicle faults related to steering, suspension, and engine, along with the corrective actions taken. | 18th Sep 1936 | Box 130 \ 2 scan0147 | |
| The investigation and cure of excessive oil consumption and overoiling in a Bentley. | 18th Sep 1936 | Box 130 \ 2 scan0148 | |
| Complaints and consumption tests for Stromberg D.C.42 carburetters at Cricklewood. | 19th Sep 1936 | Box 130 \ 2 scan0149 | |
| Bearing failures, ride quality, and braking issues on specific vehicles. | 23th Sep 1936 | Box 130 \ 2 scan0150 | |
| Measurements and issues with a Bentley B-8-GA cylinder block following complaints of excessive oil consumption. | 24th Sep 1936 | Box 130 \ 2 scan0151 | |
| Stripping down and inspection of a 6-B-IV engine. | 24th Sep 1936 | Box 130 \ 2 scan0152 | |
| Diagram illustrating cylinder wear measurements for the Paris Trials Car B 8 G.A. cylinder block. | 24th Sep 1936 | Box 130 \ 2 scan0153 | |
| Measurement chart for the B 8 G.A. Cylinder Block from the Paris Trials Car. | 24th Sep 1936 | Box 130 \ 2 scan0154 | |
| Vehicle trials for Bentley, Phantom III, and 30 HP models. | 25th Sep 1936 | Box 130 \ 2 scan0155 | |
| Telegram, engine tests, and an examination of crankshaft journals and bearings. | 25th Sep 1936 | Box 130 \ 2 scan0156 | |
| Inspection report detailing engine bearing measurements and wear analysis. | 25th Sep 1936 | Box 130 \ 2 scan0157 | |
| Bearing wear, detailing measurements taken of journal bearings with and without paper packings to address slackness in the housing. | 25th Sep 1936 | Box 130 \ 2 scan0158 | |
| Investigation into connecting rod crankshaft pins and bearing issues, with an analysis of conrods from a 3.5 Litre Bentley. | 25th Sep 1936 | Box 130 \ 2 scan0159 | |
| Polished markings on gudgeon pins and piston tops, and subsequent measurement of cylinder bores. | 25th Sep 1936 | Box 130 \ 2 scan0160 | |
| Cylinder block wear measurement report after 15,000 miles. | 25th Sep 1936 | Box 130 \ 2 scan0161 | |
| The Paris Trials Bentley and issues with the Phantom III's steering. | 29th Sep 1935 | Box 130 \ 2 scan0162 | |
| The Phantom III Paris Trials Car detailing steering adjustments, propeller shaft issues, and engine smoke. | 29th Sep 1936 | Box 130 \ 2 scan0163 | |
| Complaint regarding engine detonations in a 4 1/2 litre Bentley in London. | 30th Sep 1936 | Box 130 \ 2 scan0164 | |
| Complaint report on a Bentley B-134-EF with a burnt exhaust valve. | 30th Sep 1936 | Box 130 \ 2 scan0165 | |
| Testing instructions for car 35-EX, including issues with mileage, clutch, oiling, and silent tappets. | 2nd Oct 1936 | Box 130 \ 2 scan0166 | |
| Acknowledging receipt of a complaint regarding Bentley detonations. | 2nd Oct 1936 | Box 130 \ 2 scan0167 | |
| Complaints of rear brakes binding due to lack of lubrication on Bentley, 20/25, and 25/30 models. | 27th Oct 1936 | Box 130 \ 2 scan0168 | |
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