I see I had a post on this thread in 2008. Yikes! I was, no doubt, a mere child.... :)
As we fast forward to the present, here is the top of the line of succession, which hasn't changed since my original post:
1. PETER MICHAEL HAMILTON (B. 1968), a great-grandson of the Hon Henry, brother of the 3rd and 4th Barons
2. George William Lark (b. 1999), elder of the twin sons of #1.
3. Robert Hamilton Wim (b. 1999), younger of the twin sons of #1, twin brother of #2
4. Simon Antony (b. 1972), brother of #1
5. William Alexander Hazard (b. 2000), son of $4
6. Paul William (b. 1973), brother of #1 and #4.
I'm hoping to be around and answer the same question in 2042.