Building a TT:120 layout in 2026 is getting easier as more manufacturers are producing items in the scale. Heljan are making locomotives, and Peco are releasing TT:120 wagons.

Why TT:120?

TT:120 can be a great space saver while not losing detail. Moreover, you can fit a 1st radius oval of TT track on a 2′ x 4′ baseboard. However, not all locomotives can traverse 1st radius track. Notably, the locomotive in the starter set below can, but this set comes with 3rd radius curves.

Train sets

Hornby has released a starter TT:120 train set that is less than £100. This is a good place to enter the otherwise expensive world of TT.

Locomotives

The main thing to note is that TT:120 locomotives come in three types: DC, DCC and DCC sound fitted. The DC types come with a pre-fitted decoder socket.

UK type TT:120 locomotives are available from Hornby and Heljan. If you are on a budget, there are some locomotives now appearing on the secondhand market. Below is a Hornby A4 Pacific for £79.95.

Track

Hornby TT:120 track is available in four radii. There are also points and crossovers.

Basic ovals can be found on eBay.

TT:120 Track is available from Hornby and Peco. There are basic ovals as well as extension packs.

Flexible track is available in boxes or as single lengths.

Rolling stock

Hornby and Peco make a range of wagons.

Vehicles

Road vehicles in TT:120 are still quite limited. Oxford Diecast has a small range of ready-to-use vehicles. Non-UK manufacturers also make UK-type resin vehicles that need painting. For example, Panzer Shop has a print-to-order TT:120 Land Rover available.

TT:120 Buildings

TT: 120 buildings are available on this site. There are also resin buildings from Hornby and a range of TT:120 laser-cut kits from , Peco, In The Greenwood and others.

TT: 120 Buildings from Classic Collect Models

Animals and scenery

Guagemaster manufactures a set of farm animals.