[Dividend tax on ISA account]

Got my answer from Reddit, but apparently what i missed and the IG people failed to mentioned was the Withholding Tax, Since my stock investments where in the US there was still a 30% Tax on the US side for all Dividends.

[Dividend tax on ISA account]

Hello folks so i have an ISA account with IG for my dividends investment and it is my only shares account.

But for all my Dividend gains a tax amount was cut by IG. Note worthy at this point i did not make more than 2000£ worth of gains from dividends which is the Tax free allowance and i still have 15 000£ leftover from my ISA tax exemption. When i called IG they told me that only real estate dividends fall within the tax-free category.

Note thats not mentioned anywhere in the government website, https://www.gov.uk/tax-on-dividends.

Should i be taxed as they said as my dividends are not real-estate related or was this a mistake on their part?

Thanks for any help!