Nuclear flask and cradle for 4mm:1ft BR Rectank

This is a 4mm:1ft scale set of parts to adapt my 4mm:1ft BR Rectank model into the nuclear flask carrying variant. It consists of nuclear flask, a cradle to hold the flask, and a pair of warning signs. See the 3mm and 2mm models for a bit of extra information. The model is based on a single photograph, and no accurate drawings. The flask is pure conjecture based on photographs of other flasks, and sized for the cradle. Glue the signs and cradle on the deck of the Rectank wagon (see the 2mm and 3mm models for the arrangement) and when secure, sit the flask in the cradle. I have not tried one myself in this scale, but I'm pretty happy with the 2mm and 3mm versions.
There's no markup in the price, so if you would rather try it in a cheaper material, let me know which one and I'll see if it is likely to be printable (currently looks like about £25 in finest detail plastic, date 2019-10-02).