Ah different kind of investment than I usually reply to, which is all focussed on the ISA, SIPP and DB Pensions....
Watches are doing well - but in all honesty, you're funds are not in the ballpark of the investment grade pieces. Similarly with Jewellery, you are in the high street range, which is magpie level, not investment grade.
Despite being Scottish I can't comment on the Whiskey... Hate the stuff, saw so much domestic abuse related to its misuse, that I can't bear it.
I think antiques have had their day - young people arent into them, so I see the market drying up for many of them...
One area that you might wish to consider is glass... There are some very special collections which exist which you might wish to explore... Isle of Wight glass is one... (Yes they are based on the Isle of Wight). They look beautiful, make fantastic ornaments, can grow at a small pace and can be very individual...
However, In all honesty, I would suggest that given the amount available, I would go down the hobby route... Music? Golf? Model Engineering? Watch making? Woodworking? Train sets? Remote control cars, boats and planes... (Quite a community behind that one...)
Whatever you decide, let us know... Just interested to see where you end up...
Best of luck, hope I've sparked an idea...