As the only magazine dedicated to diesel and electric era modelling, we always endeavour to provide the best coverage and inspiration we possibly can. The summer 2007 issue of Modern Railway Modelling continues to do this with articles on locomotives, layout construction, motive power depots, wagons and rollingstock together with a great deal of prototype inspiration.

It's 50 years since the Class 20 first took to the rails, yet they remain in traffic and continue to find daily service on today's rail network. David Brown remarks on this achievement in his editorial column and we commemorates this remarkable milestone with an article on the construction of the 7mm scale Class 20 kit by Tower Models.

Modern motive power enthusiasts are not left out because we feature articles on the prototype Class 57 and how to spruce up a Hornby Class 60 with oodles of dirt to create a dirty, run-of-the-mill 'Donut'. N gauge modellers are not left out because we feature an article on the construction and finishing of the recently released C-Rail Intermodal PFA kit.

Our cover story this issue is Oulton TMD, a 4mm scale DCC layout featuring locomotives working lights and a great deal of modern scenic treatment including a refuelling point and other related industry.

We continue to offer the most comprehensive reviews on new products, including our unsurpassed performance testing regime which is one of the toughest around. If a model performs well in 'LocoTest', it should perform well on your layout. Our LocoTest 'victim' for this issue is the new ViTrains Class 37 model which was put through its paces on our test rigs. You will need to buy the magazine to find out how well it performed. Does it live up to the performance of real 'Tractors'?

• Ian Futers builds a Tower Models Class 20 kit for is O gauge layout, Loch Lochy and describes how he does it. The article includes prototype photographs for reference.
• Nigel Burkin profiles 57 601 from a modelling perspective in his article 'Ronnie' which includes a review of the Bachmann Collectors' Club model and prototype information.
• A Hornby Class 60 is treated to a dose of weathering in James Makin's article; A Dirty, Dull 'Donut'.
• A PFA in N gauge is the subject of our rolling stock feature in which Nigel Burkin describes how he built and finished the C-Rail Intermodal PFA kit.
• Our cover story is Oulton TMD, Allan Cromarty's 4mm scale DCC layout.
• James Makin looks at the performance of the Bachmann Class 66 and shows how to fit additional pickups to the earlier version of the model.
• Peter Marriott produces a little slice of Scottish scenery with his West Highland layout.
• Prototype Pictorial features the Class 158 working in Scotland. This collection of prototype photographs shows that not all Class 158s are the same! This is followed up with a review of the limited edition AMRSS Class 158 in First ScotRail livery.
• Our comprehensive review and locomotive testing project features the new ViTrains Class 37/4 model. How well has ViTrains done with its first British outline locomotive?
• The Heljan Cargowaggon is put under the microscope and comprehensively examined.
• Battle of the ballast wagons - the Hornby 'Sealion' and Bachmann 'Sea Cow' go head-to-head.
• Steve Grantham examines the EMD Model 40, a small industrial locomotive produced by Roundhouse in HO scale.
• Great GUV! The new Bachmann General Utility Van is closely examined by Nigel Burkin.
• International modelling news includes new releases from Atlas, the Mehano ICE and double F3 by Proto 1000.