Link comes back with page not found ?
I've tried random postcodes all across Eastbourne using this - https://sales.talktalk.co.uk/buy/availability-checker/index/package/tvplus?type=simplybbfibre - you can't get Talk Talk fibre in Eastborne.
Even using the TalkTalk service finder they don't have any fibre in any of Eastbourne. You can only be on copper so moving to Sky will make ziltch difference to your internet service.
Firstly, love the word 'gubbins', great word - not used often enough nowadays.
So, a very high level of how home internet connections work. There are four normal ways people connect at home to the internet :
1. Via copper cable
2. Via fibre cable
3. Via moblie
4. Via satellite
Let's ignore...
But your main complaint in your first post was the internet dropping out. Unless it was the router rather than the copper line you'll have exactly the same problem with Sky.
I suspect your internet is currently delivered by a BT owned copper line then. The exact same copper line that Sky will use. Your TV might improve but it doesn't use the copper line.
Would never go back to Sky - utterly horrendous customer service. Love VM - even with price rise wiped out after complaining bad got a third Tivo box for free.
Since when have talk talk done cable ?