In the control unit there are 3 mechanics GVL224 (Supercharging, Screw pitch and universal). Mechanics of iron with the possibility of adjusting the resistance force, axles on bearings with non-contact sensors.

On the handle of the throttle 15 buttons, the place of the sixteenth button was occupied by a potentiometer (option).

Front panel:
- 3 axes on variable resistors (potentiometers);
- 8 buttons in one unit;
- 4 toggle switches without locks in the extreme positions (like 8 buttons).

If desired, two axes can be set on the side panels of the enclosure in variable resistors (potentiometers) if there is no potentiometer on the throttle handle, or one potentiometer if the potentiometer is left on the handle. No more than 8 axes in total.

The case is made of acrylic 3mm thick, collected as a 3D puzzle ..., available in black, white and transparent.

For questions and suggestions, write here or on my box GVL224@ukr.net
https://youtu.be/GmasHzsR0fo

Another option

Price, including shipping to UK and what payment methods are available?.....also, are all the toggle switches [on-off-on] ?

This "- 4 toggle switches without locks in the extreme positions (like 8 buttons)." Mean that they are (MON)-OFF-(MON) switches.

See: https://youtu.be/GmasHzsR0fo?t=49

But the maker can replace with toggle ON-OFF-ON.

The price of such a block is 140 US dollars, plus 25 dollars for sending by mail.
Payment by money order, options will send in a personal or e-mail.
About the switches Sokol1 answered everything correctly (thanks).
If you want to order something, write to me on e-mail gvl224@ukr.net