These 2 will cut your throat before you mutter
There's a bit of stereotyping going on here from the era they were made with the names and tags - all travelling players were dodgy.
The one you're missing actually has 'gypsy' on the slotta, even though it says Thug on the catalogue pic you posted.
Most UK 'Contents' insurance has a 'Valuable Goods' clause which lists an amount somewhere in the £10K - £30K bracket and then gives a "single item" maximum value.
Knowing insurance companies ability to bend the rules I made a point of explaining exactly what I had.
It would seem that you could consider each individual model as a single valuable item, but they might also consider an "army" or indeed a collection as a single item.
I had an interesting conversation about it as I was asked if the figures were all kept together or in batches, and we then went on to discuss a jewellery box where there may be several rings in one box but all with different individual values.
It would be sensible to get clarification at time of taking the policy out.
It's all a bit of a moot point as if you had a fire for example and all your metal minis melted, what are the chances of actually replacing them?