| Description | Date | Identifier | |
| Service complaints for Bentley Speedometer and Rev. Counter Drives with a proposed design solution. | 20th May 1937 | Box 131 \ 4 scan0223 | |
| Service complaints concerning Bentley instrument lighting. | 20th May 1937 | Box 131 \ 4 scan0224 | |
| Inquiry about the results of new KLG. FLB.30X parts fitted to the 25/30 model. | 20th May 1937 | Box 131 \ 4 scan0225 | |
| Squeaking brakes on Bentley & 25/30 models due to insufficient pilot shoe load. | 20th May 1937 | Box 131 \ 4 scan0226 | |
| Instruction to fit a 100 mesh filter gauze to the petrol filter on all Experimental Phantom engines, replacing the existing 60 mesh gauze. | 20th May 1937 | Box 131 \ 4 scan0227 | |
| Disallowed expenses for taxi fare and a dinner bill. | 20th May 1937 | Box 131 \ 4 scan0228 | |
| Unintentional carburetter design change between the 25/30 and Phantom III models. | 20th May 1937 | Box 131 \ 4 scan0229 | |
| Service complaint memo regarding a bonnet hinge rod working out on a 25/30 Ph.III model. | 21th May 1937 | Box 131 \ 4 scan0230 | |
| Trial of Palmetto Water Gland Packing and proposing its standardization. | 21th May 1937 | Box 131 \ 4 scan0231 | |
| Service complaint memo detailing the cause and solution for sticking Bentley throttle controls. | 22th May 1937 | Box 131 \ 4 scan0232 | |
| Notice on the failure of a Bentley rocker shaft due to a loose pedestal nut, with instructions for depots. | 22th May 1937 | Box 131 \ 4 scan0233 | |
| Service issues with the rubber coupled dynamo drive on the Wraith model. | 22th May 1937 | Box 131 \ 4 scan0234 | |
| Proposal to test a new starter motor design for the Wraith model, featuring a small pinion and smaller screwed shaft. | 22th May 1937 | Box 131 \ 4 scan0235 | |
| Service complaint memo detailing slackness and lost movement in the Phantom III ignition controls. | 24th May 1937 | Box 131 \ 4 scan0236 | |
| Rubber coupling drive, specifically the Wraith Dynamo Drive, on Bentley and Phantom models. | 24th May 1937 | Box 131 \ 4 scan0237 | |
| Service complaint regarding unsatisfactory ignition controls on the Phantom III due to slackness in bearings and levers. | 24th May 1937 | Box 131 \ 4 scan0238 | |
| The failure of float chamber covers on early Bentley S.U. Carburetters. | 25th May 1937 | Box 131 \ 4 scan0239 | |
| The Wraith water pump gland packing and circle butt joint. | 25th May 1937 | Box 131 \ 4 scan0240 | |
| Carburetter flooding on the Phantom III, identifying the difference in filter mesh size compared to the 25/30 HP model. | 27th May 1937 | Box 131 \ 4 scan0241 | |
| Trying out lightened exhaust valves on a Phantom II to reduce valve noise, requiring altered valve guides. | 27th May 1937 | Box 131 \ 4 scan0242 | |
| Investigation report on a recurring carburettor flooding issue on a Phantom III. | 27th May 1937 | Box 131 \ 4 scan0243 | |
| Noisy Wraith dynamo drives, noting the fitting of larger rubber blocks and a design concern regarding alignment. | 27th May 1937 | Box 131 \ 4 scan0244 | |
| Faulty Bentley rear axle being returned for repair. | 28th May 1937 | Box 131 \ 4 scan0245 | |
| Under bonnet temperatures and proposing solutions related to airflow and deflection plates. | 31th May 1937 | Box 131 \ 4 scan0246 | |
| Suggestion to reduce under-bonnet temperatures on the Phantom III by modifying the flywheel and casing to act as a fan. | 31th May 1937 | Box 131 \ 4 scan0247 | |
| With a diagram illustrating a fault where the front brake pull rod fouls on the frame. | 31th May 1937 | Box 131 \ 4 scan0248 | |
| On aluminium debris in carburettor float chambers and a Stromberg jet body manufacturing defect. | 2nd Jun 1937 | Box 131 \ 4 scan0249 | |
| Fault with the Phantom III accelerator mechanism counter shaft, which collapses when bolts are over-tightened. | 2nd Jun 1937 | Box 131 \ 4 scan0250 | |
| Service trouble report for the Bentley 3½ and 4¼ Litre models. | 2nd Jun 1937 | Box 131 \ 4 scan0251 | |
| The unsuitability of aluminium washers for joints and the preference for copper asbestos washers. | 2nd Jun 1937 | Box 131 \ 4 scan0252 | |
| The examination of Phantom III brake rod fouling issues. | 2nd Jun 1937 | Box 131 \ 4 scan0253 | |
| The supply of high tension wire to the Cricklewood depot. | 2nd Jun 1937 | Box 131 \ 4 scan0254 | |
| Unresolved supply of correct high tension wire to the Cricklewood depot. | 2nd Jun 1937 | Box 131 \ 4 scan0255 | |
| Cylinder bore wear measurements, petrol pump troubles, and a message regarding a Bentley. | 3rd Jun 1937 | Box 131 \ 4 scan0256 | |
| Issues and modifications to the Phantom III starter motor cork friction disc. | 3rd Jun 1937 | Box 131 \ 4 scan0257 | |
| Starter motor modifications and flywheel wear on vehicle 35-EX. | 3rd Jun 1937 | Box 131 \ 4 scan0258 | |
| Cylinder bore wear measurements, petrol pump troubles, and accessibility points. | 3rd Jun 1937 | Box 131 \ 4 scan0259 | |
| From G. Ratcliffe to Cricklewood confirming an enclosed memo has been sent in reply to an earlier letter. | 3rd Jun 1933 | Box 131 \ 4 scan0260 | |
| Minutes of a conference on works complaints, suggesting design alterations to facilitate engine repairs. | 3rd Jun 1937 | Box 131 \ 4 scan0261 | |
| List of observed issues and suggested improvements for shock dampers, starter motors, coachwork, and handbrake levers on Bentley models. | 3rd Jun 1937 | Box 131 \ 4 scan0262 | |
| Maintenance difficulties and costs associated with the one-shot lubrication system due to modern coachwork design. | 4th Jun 1937 | Box 131 \ 4 scan0263 | |
| Issues with Phantom III sparking plug terminals and ignition wires due to component changes. | 4th Jun 1937 | Box 131 \ 4 scan0264 | |
| Slack measurement on the inner roller bearings of a Bentley rear axle pinion. | 4th Jun 1937 | Box 131 \ 4 scan0265 | |
| Slack measurement on the inner roller bearings of a Bentley rear axle pinion. | 4th Jun 1937 | Box 131 \ 4 scan0266 | |
| Bore sizes for Austin 12/6 engines and the performance of Specialloid pistons in Leyland diesel engines. | 7th Jun 1937 | Box 131 \ 4 scan0267 | |
| Request for the cost of special E.85506 valve guides for a Phantom II vehicle. | 7th Jun 1937 | Box 131 \ 4 scan0268 | |
| The results of a 100-mile road test for oil consumption for Mr. Embircios. | 7th Jun 1937 | Box 131 \ 4 scan0269 | |
| The results of a 100-mile road test for oil consumption for Mr. Embircios' vehicle. | 7th Jun 1937 | Box 131 \ 4 scan0270 | |
| Reporting the failure of joint washers made from Seacork laminated cork during trials. | 7th Jun 1937 | Box 131 \ 4 scan0271 | |
| Issues with the Bentley Oil Gauge's thin copper wire link, which can lead to incorrect oil level readings and potential engine failure. | 8th Jun 1937 | Box 131 \ 4 scan0272 | |
| Follow-up memo regarding a complaint about faulty high tension wire at the Cricklewood Depot. | 8th Jun 1937 | Box 131 \ 4 scan0273 | |
| The progress of a brake turning tool and enclosing a drawing for a valve assembly tool. | 8th Jun 1937 | Box 131 \ 4 scan0274 | |
| Hand-drawn diagram with dimensions for a tool used to fit valve springs. | 9th Jun 1937 | Box 131 \ 4 scan0275 | |
| The premature sludging of Phantom III pressure oil filters. | 9th Jun 1937 | Box 131 \ 4 scan0276 | |
| To Bentley Depot about service equipment, specifically a brake turning tool and a valve assembly tool. | 8th Jun 1937 | Box 131 \ 4 scan0277 | |
| Blueprint for a tool used to fit valve springs, also showing a tool for pushing a locking ring into position. | 8th Jun 1937 | Box 131 \ 4 scan0278 | |
| Blueprint of a throttle flange joint for 4 1/4 and 3 1/2 litre engines. | 8th Jun 1937 | Box 131 \ 4 scan0279 | |
| Throttle body distortion on 4¼-litre Bentleys due to the use of non-standard spanners by fitters. | 8th Jun 1937 | Box 131 \ 4 scan0280 | |
| Blueprint detailing two versions of a Throttle Flange Joint for different engine sizes. | 9th Jun 1937 | Box 131 \ 4 scan0281 | |
| Confirming a telephone conversation regarding issues with Bentley connecting rod liners and oil-filled rear axles upon delivery. | 9th Jun 1937 | Box 131 \ 4 scan0282 | |
| Investigating repeated fractures in Phantom III rocker shafts. | 9th Jun 1937 | Box 131 \ 4 scan0283 | |
| Service complaints regarding rod weight differences and stamping procedures. | 10th Jun 1937 | Box 131 \ 4 scan0284 | |
| The condition of Con.Rod and main bearings from Mr. A. Embiricos's Bentley 260.GA. | 11th Jun 1937 | Box 131 \ 4 scan0285 | |
| Various engine and chassis issues identified during testing. | 11th Jun 1937 | Box 131 \ 4 scan0286 | |
| Design flaws of the Phantom III petrol filter, including its fixing, pipe alignment, and union joints. | 10th Jun 1937 | Box 131 \ 4 scan0287 | |
| Damage found on a reconditioned Bentley rear axle. | 10th Jun 1937 | Box 131 \ 4 scan0288 | |
| The condition of Con.Rod and main bearings from a Bentley 260.GA, highlighting issues with shims and uneven wear. | 11th Jun 1937 | Box 131 \ 4 scan0289 | |
| Suggestion to prevent distortion of the carburettor flange joint on a 4 1/4 Bentley by fitting rings to the joint washers. | 11th Jun 1937 | Box 131 \ 4 scan0290 | |
| Blueprint drawing of a flange indicating where ring washers are fitted. | | Box 131 \ 4 scan0291 | |
| Design flaw where the spring for the Bentley anti-rattle pedal device is too small. | | Box 131 \ 4 scan0292 | |
| Blueprint drawing of a corrugated or concertina-like component with dimensional annotations. | 12th Jun 1937 | Box 131 \ 4 scan0293 | |
| Measurements of Bentley pistons in a new cylinder block, questioning a potential modification. | 12th Jun 1937 | Box 131 \ 4 scan0294 | |
| Phantom III Accelerator Countershaft, sent in response to an earlier query. | 12th Jun 1937 | Box 131 \ 4 scan0295 | |
| 25/30 model breakdown where the fault was found to be a broken low tension lead to the coil. | 14th Jun 1937 | Box 131 \ 4 scan0296 | |
| Aluminium turnings found in a Phantom III filter from chassis 3.BU.78. | 14th Jun 1937 | Box 131 \ 4 scan0297 | |
| Mr. Sopwith's Phantom III, which requires attention to the back axle at the Derby works. | 14th Jun 1937 | Box 131 \ 4 scan0298 | |
| The inspection and rectification of faults found on Chassis B.260.GA, owned by Mr. A. Embiricos. | 15th Jun 1937 | Box 131 \ 4 scan0299 | |
| Engine faults and corrective work carried out for chassis B.260.GA. | 15th Jun 1937 | Box 131 \ 4 scan0300 | |
| Final report on engine testing and oil consumption for Chassis B.260.GA. | 15th Jun 1937 | Box 131 \ 4 scan0301 | |
| Modifications and a performance report for the Bentley London Trials Car. | 15th Jun 1937 | Box 131 \ 4 scan0302 | |
| Recurring throttle spindle fouling issue on Phantom III cars at the Cricklewood Depot. | 10th Jun 1937 | Box 131 \ 4 scan0303 | |
| Failure and return of two Bentley dynamos due to commutator blacking. | 17th Jun 1937 | Box 131 \ 4 scan0304 | |
| Non-use of correct spanners at Kingsbury, causing throttle sticking. | 18th Jun 1937 | Box 131 \ 4 scan0305 | |
| Axle noise complaint on Mr. Sopwith's Phantom III (3.AZ.90), which was traced to the tyres and rectified. | 19th Jun 1937 | Box 131 \ 4 scan0306 | |
| Axle noise complaint on Mr. Sopwith's Phantom III car, chassis 3.AZ.90, and its resolution. | 19th Jun 1937 | Box 131 \ 4 scan0307 | |
| Failure of wire insulation for the Bentley petrol indicator due to oil saturation. | 21th Jun 1937 | Box 131 \ 4 scan0308 | |
| Confirming a cylinder block will be mailed to Paris. | 22th Jun 1937 | Box 131 \ 4 scan0309 | |
| Phantom III gearbox synchromesh cone issue and a query about bearing clearance. | 22th Jun 1937 | Box 131 \ 4 scan0310 | |
| Bentley axle noise complaint and its diagnosis. | 22th Jun 1937 | Box 131 \ 4 scan0311 | |
| Repeated rear axle shaft failure on a Bentley, chassis 189.B.L., attributed to reckless driving. | 22th Jun 1937 | Box 131 \ 4 scan0312 | |
| The poor condition of stove enamelling on cylinder blocks after service. | 22th Jun 1937 | Box 131 \ 4 scan0313 | |
| The return of two faulty Bentley front anchorage brackets for inspection. | 23th Jun 1937 | Box 131 \ 4 scan0314 | |
| Clearance issues on a Raymond Mays' Bentley B.24.GA after fitting larger cooling brake drums and longer steering arms. | 23th Jun 1937 | Box 131 \ 4 scan0315 | |
| No.2 connecting rod failure in a 4 1/4 Bentley, chassis B.14.HK, with mileage 11,642. | 23th Jun 1937 | Box 131 \ 4 scan0316 | |
| Confirming the standardization of an oil and petrol resisting cable for the Bentley petrol gauge wire. | 24th Jun 1937 | Box 131 \ 4 scan0317 | |
| Modification for an anti-rattle scheme for Bentley pedals. | 24th Jun 1937 | Box 131 \ 4 scan0318 | |
| Attempts to quiet a noisy Bentley rear axle for a critical owner. | 24th Jun 1937 | Box 131 \ 4 scan0319 | |
| The history and examination of a faulty Bentley dynamo. | 24th Jun 1937 | Box 131 \ 4 scan0320 | |
| Blueprint showing the correct and incorrect drilling positions for a reduction housing for a tachometer drive. | 24th Jun 1937 | Box 131 \ 4 scan0321 | |
| Sending three sectioned exhaust valves for the Phantom II, detailing their respective part numbers and series usage. | 24th Jun 1937 | Box 131 \ 4 scan0322 | |
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