| Description | Date | Identifier | |
| Car under test, detailing issues with tyre noise and wear, idling, brakes, a noisy oil pump, and vibration. | 12th Jul 1937 | Box 107 \ 3 scan0079 | |
| Confirming that car GWN-8 is ready for collection from the Service Dept. | 14th Jul 1937 | Box 107 \ 3 scan0080 | |
| Chasing up a note concerning a car for the London Trials. | 14th Jul 1937 | Box 107 \ 3 scan0081 | |
| Letter to the Earl of Rothes regarding communication with Jules Jadot and the Paris Depot. | 28th Jul 1937 | Box 107 \ 3 scan0082 | |
| Letter to a customer regarding dissatisfaction with the brakes on a 25/30 HP car. | 28th Jul 1937 | Box 107 \ 3 scan0083 | |
| Letter on headed notepaper regarding a friend's purchase of a 25 HP R.R. | 28th Jul 1937 | Box 107 \ 3 scan0084 | |
| Letter regarding a customer's dissatisfaction with brake and servo issues and the service in Belgium. | 28th Jul 1937 | Box 107 \ 3 scan0085 | |
| Customer complaint from Mons. Jules Jadot in Brussels about the brakes and servo on his 25/30 model. | 28th Jul 1937 | Box 107 \ 3 scan0086 | |
| Letter from The Earl of Rothes to W.A. Robotham regarding Mr. Jules Jadot's car and a personal invitation. | 29th Jul 1937 | Box 107 \ 3 scan0087 | |
| Letter of correspondence to The Earl of Rothes regarding travel plans and a potential meeting. | 30th Jul 1937 | Box 107 \ 3 scan0088 | |
| Attempt to contact Mr. Jules Jadot in Brussels regarding his 25/30 HP Chassis. | 3rd Aug 1937 | Box 107 \ 3 scan0089 | |
| Letter to Monsieur Jules Jadot regarding the dispatch of a new set of brake linings. | 19th Aug 1937 | Box 107 \ 3 scan0090 | |
| Requesting brake linings and rivets to be sent out for Mr. Jules Jadot's 20/25.HP car. | 19th Aug 1937 | Box 107 \ 3 scan0091 | |
| Sending incorrect rear brake lining for Mr. Jules Jadot's 20/25 HP car. | 23th Aug 1937 | Box 107 \ 3 scan0092 | |
| Mr. Jules Jadot's 20/25 HP car, chassis GAE-79, regarding brake liners and guarantee. | 21th Aug 1937 | Box 107 \ 3 scan0093 | |
| Broken cam balancer springs on chassis GUN-37, which were causing an engine noise. | 12th Jul 1937 | Box 107 \ 3 scan0094 | |
| Failure of an oil pressure pipe on chassis GRO-46 and the subsequent design alteration. | 31th Aug 1937 | Box 107 \ 3 scan0095 | |
| A modified side engine guard to prevent oil pipe vibration on chassis GRO-46. | 6th Sep 1937 | Box 107 \ 3 scan0096 | |
| Investigation into a complaint of inadequate clearance between the engine guard and oil pipe on chassis GRO-46. | 15th Sep 1937 | Box 107 \ 3 scan0097 | |
| Correspondence regarding recurrent clutch issues on chassis GPZ-67 for Major Digby Whitehead. | 20th Oct 1937 | Box 107 \ 3 scan0098 | |
| To Major Digby Whitehead regarding the dispatch of graphite bronze facings. | 21th Oct 1937 | Box 107 \ 3 scan0099 | |
| Request for data on the performance of Graphite Bronze Clutch Facings for 20/25 and 3 1/2 litre Bentley models. | 21th Oct 1937 | Box 107 \ 3 scan0100 | |
| Clutch plates for chassis GTZ-67 belonging to Major Digby Whitehead. | 22th Oct 1937 | Box 107 \ 3 scan0101 | |
| Fractured 20/25 HP servo connecting rod from car GOH-3, which failed due to maltreatment during an adjustment attempt. | 26th Nov 1937 | Box 107 \ 3 scan0102 | |
| Requesting the despatch of an 11' clutch plate for car GMO-11 via passenger train. | 30th Nov 1937 | Box 107 \ 3 scan0103 | |
| Dispatch of an 11-inch clutch plate for Chassis GMO-11. | 30th Nov 1937 | Box 107 \ 3 scan0104 | |
| Cause and solution for a squeaking rear axle on the 25/30 HP model. | 21th Dec 1937 | Box 107 \ 3 scan0105 | |
| Hydraulic shock damper issues, detailing refit bushes and other adjustments for various 25/30 HP chassis. | 21th Dec 1937 | Box 107 \ 3 scan0106 | |
| Complaint report regarding a broken valve spring on chassis GLP-23 after 318 miles. | 22th Dec 1937 | Box 107 \ 3 scan0107 | |
| Letter of enquiry regarding a conflicting report on a battery fault for a 25/30 HP chassis. | 30th Dec 1937 | Box 107 \ 3 scan0108 | |
| Follow-up report on the performance of Cleveland bronze clutch facings on chassis GHG-27 owned by Sir Bernard Eckstein. | 11th Jan 1938 | Box 107 \ 3 scan0109 | |
| Letter seeking clarification on ordering a new Carburettor and Air Silencer for a mother's '25' model. | 11th Jan 1938 | Box 107 \ 3 scan0110 | |
| Letter confirming a request to fit an air silencer to a car with a maximum cost of £10. | 12th Jan 1938 | Box 107 \ 3 scan0111 | |
| Laboratory report on a broken front road spring mainplate from a 25/30 HP chassis. | 31th Jan 1938 | Box 107 \ 3 scan0112 | |
| Report cover showing a broken front road-spring's main plate from a 25/30 HP chassis. | 31th Jan 1938 | Box 107 \ 3 scan0113 | |
| Laboratory report investigating the fracture of a broken eye from a 25/30 HP chassis. | 31th Jan 1938 | Box 107 \ 3 scan0114 | |
| Laboratory report with two photomicrographs examining a fracture and cracks in a chassis spring. | 31th Jan 1938 | Box 107 \ 3 scan0115 | |
| Laboratory report showing a fracture and cracks on a spring from a 25/30 HP chassis. | 31th Jan 1938 | Box 107 \ 3 scan0116 | |
| Laboratory report with a micrograph showing cracks associated with corrosion pits on a broken surface. | 31th Jan 1938 | Box 107 \ 3 scan0117 | |
| Outstanding complaints on the 25/30 HP chassis, including bonnet rattles and brake issues. | 3rd Feb 1938 | Box 107 \ 3 scan0118 | |
| Vehicle complaints and modifications, including issues with clutches, exhaust rattles, engine performance, and front axle knocks. | 3rd Feb 1938 | Box 107 \ 3 scan0119 | |
| Modification note for the 20/25 HP chassis, specifying the clutch has been fitted with Graphite Bronze Liners. | 4th Feb 1938 | Box 107 \ 3 scan0120 | |
| Clarifying that the bronze clutch facing modification applies only to the 20/25 HP chassis. | 8th Feb 1938 | Box 107 \ 3 scan0121 | |
| Submission of reports on graphite bronze clutch facings for the 20/25 HP Chassis. | 9th Feb 1938 | Box 107 \ 3 scan0122 | |
| Private query regarding the procedure for handling an owner's engine complaint, referencing Complaint Report No. N.649. | 8th Mar 1938 | Box 107 \ 3 scan0123 | |
| Customer complaints about inefficient brakes on Bentley and 20-25 or 25-30 HP models, with suggested remedies. | 30th Mar 1938 | Box 107 \ 3 scan0124 | |
| Complaint about a noisy valve mechanism on a 20/25 HP car, seeking a cure. | 7th Apr 1938 | Box 107 \ 3 scan0125 | |
| Customer complaints of valve spring swish, identified as a surge period, for the 20/25 HP valve gear. | 13th Apr 1938 | Box 107 \ 3 scan0126 | |
| Handling of complaint reports N.1089 and N.1090 concerning defective thermostats. | 25th Jun 1938 | Box 107 \ 3 scan0127 | |
| Response to complaint reports N. 1089 and N. 1090 regarding a combined thermometer and oil gauge. | 28th Jun 1938 | Box 107 \ 3 scan0128 | |
| Procedure to prevent No.6 piston seizure on 25/30 HP engines during decarboning. | 29th Jun 1938 | Box 107 \ 3 scan0129 | |
| History of piston seizure on three 25/30 HP chassis. | 17th Jun 1938 | Box 107 \ 3 scan0130 | |
| Investigation into piston seizures on the upper lands of the 25/30 HP chassis. | 27th Jun 1938 | Box 107 \ 3 scan0131 | |
| Piston failures, including scuffing and seizure, across various engine models. | 27th Jun 1938 | Box 107 \ 3 scan0132 | |
| Release of a piston for the Wraith chassis and a meeting about Bentley failures. | 27th Jun 1938 | Box 107 \ 3 scan0133 | |
| History of piston seizure incidents on three 25/30 HP chassis cars. | 17th Jun 1938 | Box 107 \ 3 scan0134 | |
| Internal query regarding complaint report N.1218 about the 25/30 HP model's rear wheel drivers. | 5th Jul 1938 | Box 107 \ 3 scan0135 | |
| Faulty Zenith carburetter on chassis GHO-11 causing poor petrol consumption and the need for a decision on future repairs. | 18th Jul 1938 | Box 107 \ 3 scan0136 | |
| Response regarding a complaint of a creaking offside rear wheel driver on Chassis No. GRO-2. | 6th Aug 1938 | Box 107 \ 3 scan0137 | |
| Supply and future requirements for Graphite Bronze Clutch Facings for the 20/25 HP model. | 12th Aug 1938 | Box 107 \ 3 scan0138 | |
| Recommendation to increase an order for 1,000 facings from Vandervells due to a lack of domestic production. | 12th Aug 1938 | Box 107 \ 3 scan0139 | |
| Investigation and replacement of a Callorstat to correct radiator shutter operation on chassis GWN-23. | 11th Oct 1938 | Box 107 \ 3 scan0140 | |
| Letter to a Mr. Rowbottom regarding a visit on a Sunday. | 11th Oct 1938 | Box 107 \ 3 scan0141 | |
| Customer complaint letter regarding a vehicle's persistent swaying issue on corners. | 15th Oct 1938 | Box 107 \ 3 scan0142 | |
| Report regarding a sticking oil gauge on chassis GWN-16, detailing its replacement and the return of the faulty unit. | 15th Oct 1938 | Box 107 \ 3 scan0143 | |
| Customer-supplied Macmillan motor oil for a car undergoing decarbonisation. | 17th Oct 1938 | Box 107 \ 3 scan0144 | |
| Letter to a customer regarding suspension issues and an invitation to test drive the new Wraith. | 18th Oct 1938 | Box 107 \ 3 scan0145 | |
| Letter from a customer regarding the swaying of his car and the prospect of buying a new one. | 21th Oct 1938 | Box 107 \ 3 scan0146 | |
| Company's stance on customers using special, non-recommended oil in their cars, referencing Lady Sassoon. | 25th Oct 1938 | Box 107 \ 3 scan0147 | |
| Rescinding previous instructions for decarbonising a 25/30 HP engine, related to piston seizures. | 1st Nov 1938 | Box 107 \ 3 scan0148 | |
| Calorstat part sent for examination for chassis GAR-3. | 17th Nov 1938 | Box 107 \ 3 scan0149 | |
| The return of two radiator calorstats from chassis GGR-39 for inspection. | 24th Nov 1938 | Box 107 \ 3 scan0150 | |
| Test results for calorstats returned for examination from four different chassis. | 24th Nov 1938 | Box 107 \ 3 scan0151 | |
| Request for a complete roller assembly with broken balls removed from chassis GRO.7. | 1st Dec 1938 | Box 107 \ 3 scan0152 | |
| Defective calorstats, referencing a letter sent to Messrs. S. Smith & Sons. | 5th Dec 1938 | Box 107 \ 3 scan0153 | |
| Letter regarding the return of six defective calorstats for examination and repair. | 5th Dec 1938 | Box 107 \ 3 scan0154 | |
| Follow-up communication regarding a complaint about sending steering parts for chassis GRO-7. | 5th Dec 1938 | Box 107 \ 3 scan0155 | |
| Examination report on a petrol pump from chassis GMO.20, discussing potential valve and diaphragm issues. | 7th Jan 1939 | Box 107 \ 3 scan0156 | |
| Follow-up letter to Dex Garages Ltd. regarding the repair status of a returned calorstat for Chassis GRP-38. | 27th Jan 1939 | Box 107 \ 3 scan0157 | |
| Chassis number GRP-38 for Dex Garages Ltd, following up on a query about a calorstat. | 4th Feb 1939 | Box 107 \ 3 scan0158 | |
| Analysis of a complete clutch removed from a customer's car, noting excessive heat, slipping, and the condition of the Thermoid facing. | 20th Feb 1939 | Box 107 \ 3 scan0159 | |
| Request for details on a returned B. & B. clutch and a Thermoid faced plate. | 22th Feb 1939 | Box 107 \ 3 scan0160 | |
| Cost-sharing for a customer's rear silencer replacement after three years of use. | 21th Mar 1939 | Box 107 \ 3 scan0161 | |
| Expected lifespan of car parts and the policy for replacement at the company's expense. | 30th Mar 1939 | Box 107 \ 3 scan0162 | |
| Issue of exhaust valve sinkage in 25/30 HP engines and proposing a cylinder head modification. | 6th Apr 1939 | Box 107 \ 3 scan0163 | |
| Reclaiming a cylinder head by modifying it for use on a 25/30 HP transport car. | 6th Apr 1939 | Box 107 \ 3 scan0164 | |
| Replacing silencers at the company's expense for several makes of car. | 14th Apr 1939 | Box 107 \ 3 scan0165 | |
| Epidemic of juddering trouble with lead-bronze clutch liners on 20/25 HP chassis. | 25th May 1939 | Box 107 \ 3 scan0166 | |
| Recent trouble with Graphite Bronze Clutch Liners for the 20/25 HP model. | 31th May 1939 | Box 107 \ 3 scan0167 | |
| Clutch judder investigation on car GSY.54, a 20/25 HP model. | 24th Aug 1939 | Box 107 \ 3 scan0168 | |
| Letter from the Head Chauffeur to the Governor General of South Africa concerning chassis 3.BT-25. | 25th Aug 1939 | Box 107 \ 3 scan0169 | |
| Letter from Government House, Pretoria, regarding the maintenance, performance, and issues with Chassis No. 3.BT-25. | 11th Aug 1939 | Box 107 \ 3 scan0170 | |
| Page 2 of a chauffeur's report on a tour in the Transkei Territory, with a request for spare car parts and accompanying photographs. | 27th Feb 1940 | Box 107 \ 3 scan0171 | |
| Investigation into a sticking 2nd gear on Chassis No. WMB-43, caused by broken lugs on the 2nd motion shaft. | 27th Feb 1940 | Box 107 \ 3 scan0172 | |
| Request for sprung and unsprung axle weights for Goshawk 11 open and limousine cars to develop a spring scheme. | 27th Jan 1922 | Box 107 \ 4 scan0001 | |
| Request for the complete weight of a 5-Goshawk-II car and feedback on its performance during a run to London. | 21th Mar 1922 | Box 107 \ 4 scan0002 | |
| Comparison of the weights of complete Goshawk cars and the front axle weights of 40/50 HP and Goshawk-11 models. | 14th Jun 1922 | Box 107 \ 4 scan0003 | |
| Weight specifications for Goshawk models with Mulliner, Maythorn, and Hooper bodies. | 14th Jun 1922 | Box 107 \ 4 scan0004 | |
| Comparison of front axle weights between the 40/50 HP and the Goshawk II models. | 11th Sep 1922 | Box 107 \ 4 scan0005 | |
| The weights required to operate the Goshawk de-clutching lever. | 11th Sep 1922 | Box 107 \ 4 scan0006 | |
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