Pity you are in the UK. Acoustic pianos are reviled furniture in the US, There are 5 consoles over 39" tall worth driving out to see on my Craigslist, all under $500. In 2008 I saw a 44" Baldwin in the reviled blonde color for $200. I played on of those at contest once, the loudest console I every played.
Limiting oneself to the current oriental brands pretty much limits one to a certain price, since they took over the market about 1980. There are many forgotten brands from the forties, fifties, sixties, and seventies, that are quite competent pianos. Some brands have their cachet destroyed by new owners that use the name to sell junk. I have played on competent consoles (over 40" tall) from Sohmer, Baldwin, Cable, Wurlitzer, Steinway,Everett. Many secondary brands are pretty good, like Goodman, Hamilton by Baldwin, Mason, Chickering. Pianos I did not like or were falling apart, Kimble, Winter. UK brands you will have to get advice from a UK resident, but many US soldiers were in the UK post WWII.
Pianos are not cars, they are not made of rubber and sheet metal, and they don't deteriorate sitting still unless there are mice, mold, humidity or water damage. When you check out a piano, check the wear on the hammer felts, whether the hammer shafts rock back and forth, whether there is mold or mouse consumption damage, whether the soundboard is cracked or not. Check the action to see how fast, some are faster than others. My 1941 Steinway purchased 2010 sounded awful, but the action was fast and unworn, and the upper notes had a certain tone even though badly out of tune. It took seven tunings to get it singing, all by me with my allen wrench and socket. A bargain at $1000. But the $200 Baldwin was probably louder with great tone, only I don't have a stage so I don't need the volume. I tried to talk the music committee at church to go take a listen, but they prefer their feeble bassless Yamaha studio piano, it is "new". Watch cragslist and throw away shopper papers, also Salvation army and other charity resale shops. With 44" HDTV taking over living rooms, console pianos are seen as "old and in the way" by unmusical heirs.