Here are some web links which you may find interesting. My apologies if they reflect my own rather eclectic set of interests...

Armour - Modelling

Armortek - 1/6 scale metal AFVs
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Armour - Prototype

Bovington Tank Museum  - Needs no introduction. Probably the world's premier AFV collection .UK flag

Heeresgeschichtliches Museums - Vienna military museum. Holds assembled example of WWI 42cm Skoda mobile howitzer

Railway - Modelling

Agenoria Models - Now focussing on Gauge 1, Gauge 3 - 1/22.5 scale 2 1/2 inch gauge - and even 5 inch scale etched kits for modern image diesels, BR rolling stock and some steam. Check out his O8 in 1/32 scale..... NOTE as of October 2016, this link points to Agenoria on Facebook... UK flag

CSP Model Marketing - Etched railway kits for  smaller GWR, LSWR, SR & BR locos, light railway engines, industrial locos - mostly now 4mm, but some also available in the Agenoria O gauge range. UK flag

Gauge 1 Model Railway Association - 45mm gauge 1/32 and 10mm/ft scale modelling UK flag

Hallig - Vienna trams in plastic both as static and motorised HO scale models. Worth keeping any eye out for re-runs of past Vienna tram models; some of which were only available through the 'Wiener Linien' shops. Austrian

HMRS Historical Model Railway Society UK flag

Locos n Stuff - Mark Clark. Does a small but growing range of high quality 7mm NG locos and rolling stock in predominently etched brass, including a KS 'Wren and 'Brazil' - the latter in both 'stock' and Bowaters guises. UK flag

Markits - Romford metal steam locomotive wheels, gears and axles, 16.5mm, 18mm, 14mm and 12mm gauges; some for Sn3 and HOn3 too UK flag

Micro Metakit - Limited run mainly HO scale museum-quality locomotives. A range that is notable for including many classic Austrian steam designs from the pre-WW1 era. Not of course in the same price range as Liliput or Roco (check their prices...) but there again, quality remains long after the cost has been forgotten. UK flag

NMRA - National Model Railroad Association US flag

Narrow Gauge and Industrial Railway Modelling Review - does what it says on the tin. UK and European narrow gauge modelling. UK flag

OO9 Society  UK flag

On14 Group - online group dedicated to providing information on modelling 2 ft. prototypes on 14mm gauge track in 1/43 scale. UK flag

Peco - Railway Modeller, Continental Modeller magazines, Pecorama attraction, 7 1/4 inch gauge Beer Heights Light Railway UK flag

Sedlacek Modellstrassenbahnen - RTR and kits for many Vienna trams. Range is notable for including both service vehicles and also roadside details and transfers. Austrian flag

Zamzoodled - supplier of scale chopper couplings and other stuff for 1/43 scale narrow gauge UK flag

Railway - Prototype

Australian Narrow Gauge Railway Museum Society - Woodford Railway, sugar cane transport museum and home to several Bundaberg Fowlers Australian flag

Eisenbahnmuseum Schwechat - Based in the former Pressburger Bahn (now Bratislava) workshops, contains a fascinating collection of both SG and NG locomotives and stock, including  a KuK Rollbahn Henschel 0-6-0. Austrian

Ghega Museum - comemorating the life and work of Carl Ritter von Ghega, civil engineer behind the first mountain railway in the world, and much more besides. By the Kalte-Rinne viaduct on the Semmering, just outside Breitenstein. Austrian flag

Das Heitzhaus - Eisenbahnmuseum Strasshof, 1österreichischen Strassenhahn und Eisenbahn Klub. Take the train out towards Ganserdorf, but get off at Silberwald for the museum - NOT at Strasshof! Austrian flag

M√∂dlinger Stadtverkehresmuseum . Wonderful collection of Vienna trams and a couple of buses, with a particular focus upon the one-time Krauss steam tramway route - the 360 -  that ran out to the town via Heitzing, Lainz, Rodaun, and Perchtoldsdorf. Austrian flag

Museumsbahn Mladejow - two 600mm gauge Engerth locomotives are based here, one of which was converted from a WW1 Austrian 'Rollbahn' 0-6-0 after the war. Railway is also focus for annual WW1 re-enactment event. Czech flag

National Tramway Museum - Crich, Derbyshire Peak District UK flag

Workshop - Tools. Model Engineering supplies

GLR Distributors - source for ex-Kennions live steam castings , and model engineering materials and tools. UK flag

Bracehand - Spare parts for Smart & Brown and Pultra lathes. I think they will also supply new Smart & Brown machines to order, including angular contact bearing headstock Pultra 1770 and 1750, and Model L. Based in Shefford. UK flag

Lathes UK - on-line machine tool archive with manuals and specifications of lathes, milling machines, shapers etc. Some spares for Boxford and also source for belting - including Unimat SL UK flag

Tracy Tools - Drills, taps and lathe cutting tools. Prices don't seem to be that much more than for Chinese-made stuff, plus you get the option of HSS, and they also do many of the odd thread sizes that are now getting harder to get.  UK flag