One issue could be whether you have any duplication of stocks.
If you subscribe to Morningstar Premium (I don't - too stingy), you'll be able to check using the 'analysis' tool and I'm sure will already have done so.
The first paragraph of this link could be relevant -
http://www.trustnet.com/...Research.aspx?id=348685
If you hold 2 or 3 UK funds in the same sector which duplicate a popular stock, and it goes down, you would obviously lose out 2 or 3 times.
It probably applies to me as I hold IP Income, High Income, Artemis and Unicorn and the first 3 probably have similar top 10 holdings - must look into it.
I currently hold 17 funds and 2 ETFs (have just started to dabble with ETFs); it was 21 funds at one point but I started to feel I was getting carried away.
I am now looking at diversifying into investment trusts, but am wary of even more duplication as I assume the top stocks are held by good investment trust managers just as much as they are held by good unit trust managers.
I read some HL literature some time ago which made reference to 30 funds being about as many as you want, but that's not to say the man was right?