Hi Andy,
I've used dettol on a few Lledo with no problems. There are plenty of posts on the forum giving differing methods but this is mine. Caveat utilitor!
Get the original dettol. WEAR GLOVES!
50:50 mix with warm water in a sealable tub.
Disassemble car as required and place in liquid.
Seal and leave for two or three days, shaking occasionally.
When paint begins to lift when shaken, open lid and, using an old toothbrush or similar, scrub the paint off in the dettol. DO NOT WASH UNDER THE TAP! This causes the paint to turn to sticky gel.
When the paint has been scrubbed off, then rinse in warm water with a touch of washing up liquid.
Allow to dry.
Paint/assemble as required.