Put your postcode in here https://cityfibre.com/ This is the full fibre deployment company for Worthing and Adur. If they have reached you, you should have some good reliable high speed options. Note cityfibre do not provide services themselves, but there are a number of providers who can offer a service over their network.Good timing to see this question here.
I'm with Virgin too and will cancel next month after the 18 month contract ends. I'm only in the UK these days for about 6-8 weeks maximum and it just isn't worth me having any of their packages. At 65.00 pounds a month will be glad to see the back of it. I nver watch their football matches and the TV channels are mostly awful.
I do need some form of Broadband though, so will view the replies with great interest.
I'm in BN43 ( Shoreham ) if anyone is offering advice