The classic LC for overlanding from the UK is the 80 series, the fore runner to the 100 series Amazons - these have the fixed front and rear axles and are roughly the same dimensions.
You can get Amazons with fixed front axles, these are 105series, but were never available in the UK - they can be imported second hand from Europe, but certainly aren't cheap.
Price wise you are best taking a look at the 80s or Colorados, sticking to the 80 if you prefer the fixed front axle.
Most UK spec 80 series will have front, centre and rear diff locks as standard. There are a fair few Jap imports that only have the centre diff lock to try to avoid these, fitting 3rd party diff locks are expensive.
- Specialising in Land Cruiser preparation and servicing.