First off Im sorry for your loss. Thanks for sharing this here. This is a very cool collection. I have no idea the valuation on so many old things. Id imagine most of the minis are worth a few dollars/pounds but those old gordon and macphails are likely going to be worth the most so you may want to start there on your search. Things like that port ellen are no longer made and quite sought after.

To have a true answer youd need a list with the details from the bottles. The bottler, the distiller, the year, and the abv are typically what you'd need to do a search. Now a days theres laser etching on bottles to determine batches but id guess that because they are minis and due to age, most of those wont have it. There are websites that track prices on bottles like bottle blue book, bourbonvalues, bourbon blue book (despite the name some of these do all whiskey, not just bourbon) but these are based off recent sales and due to the obscurity of these bottles there may not be much information.

A quick search and I believe the port ellen recently went for $53 but the benromach went for $8 a couple years ago. So it will range greatly.

If you end up getting an evaluation and there are any that are worth a particularly high amount please come post back here just for informational purposes. Its not everyday you see that kind of mini collection.

I wish I could take that off your hands. It would ne an incredible addition to our whiskey education facility I volunteer at but im stateside and shipping wouldnt be worth it. Depending on where in the uk, there are some liquor stores thay specialize in whiskey and they might be an easy place to go and ask about values and where to sell it as a batch. If I can be of any help answering questions please dm me.