Websites covering more than one Aircraft Type

• http://www.jaapteeuwen.com/ww2aircraft - A site giving photos and notes on all RAF WWII Aircraft
  

Partworks covering more than one Aircraft Type

• Aircraft in Profile - Publisher: Profile Publications (1960's and 70's). 261 booklets of 12+ pages (also published in bound volumes). Gives an illustrated history of a particular type with photos and colour drawings (usually a 3-view with several side views). Some of the colour drawings (e.g. Hudson) can be suspect but otherwise a good reference.
• Camouflage and Markings - A series of 12 booklets covering camouflage and markings of RAF Fighter Command in NW Europe type by type.
• Warpaint - Publisher: Warpaint Books Ltd. A series of booklets giving a history, photographs, colour drawings and scale plans of a particular type.

Magazines covering more than one Aircraft Type

• Scale Aircraft Modelling - Publisher: currently Guideline. Has an Aircraft in Detail feature in each issue which gives an illustrated history of (usually) a single aircraft type with photos and side view drawings (originally B+W, now colour). Most major RAF WWII types have now been featured. Also occasionally has RAF Squadron histories.
• Airfix Magazine - no longer published. Ran many series of articles, e.g. Squadron codes, Fighting Colours, Bombing Colours, Army Air Colours, RAF Vehicles. Many of these were later published in book form.
• Air International - monthly publication originally named Air Enthusiast. From 1971 to the mid 90's mixed current news with one or two historical features, notably a series of articles named 'Warbirds' which gave an illustrated history of a single type with photos and (small) 3-view plans. Now concentrates on current topics.
• Air Enthusiast - originally launched as Air Enthusiast Quarterly alongside Air International with articles concentrating on historic / vintage topics, usually more narrowly focussed than the 'Warbirds' features in Air International.
• Aviation News - initially a newspaper format, latterly an A4 mgazine which ceased publication for a while and was then revived as part of Air Pictorial and has now taken over from Air Pictorial. Almost every issue contains a 'Warpaint' feature with 1:72 scale plans and some colour schemes.
• There are many other modelling and aviation magazines (e.g. Flypast, Scale Aviation Modeller, Scale Models) which have in depth features on RAF WWII aircraft and associated topics but I can't call to mind any series of articles worth noting separately, partly because I don't have many issues of them (if you do know of anything then let me know and I'll add them to the list).

Books covering more than one Aircraft Type

• British Warplanes of WWII - Editor: D.J.March, Publisher: Aerospace 1998. Gives from a few paragraphs to a few pages on aircraft used by the RAF and FAA (including foreign types). Photos, colour side views and cutaways are included depending on the types importance.

• Forgotten Bombers of the RAF - Author: K.Wixey, Publisher: Arms & Armour 1997.