If you are on one of the "Big" bundles, you have to keep all three elements or re-negotiate the entire package. If you are still in the minimum contract period there may be penalties for this. If you are not on one of these bundles, you can drop the TV, but be prepared that the cost of the other services may rise as a result.
Ring Retentions (150 Option 4 then 5), have a chat & see what they offer.
Cable customer since 1993. Services: FH TV, Sky Sports & Movies (2xV+), Talk Unlim Telco, VIVID 100, Virgin PAYG Mobile