Hi,
If I were you and space is no constraint I would, as suggested above, look at a full separates system.
Any of the examples above would suit your TV, the important bit is making sure the system is well balanced and suits your personal sonic taste.
Get auditions of anything you think you may like - take with you your favourite films and CD's so you can listen to excerpts you are familiar with. Arrange an appointment with a reputable dealer who will assist you in your choice - you will more than likely have at least an hours appointment where the assistant will give you his/her undivided attention in a tailormade listening room.
Try the Onkyo TX-NR609 with the Q Acoustics 2000i 5.1 pack which will come in under your £1000 budget allowing for cables.
Cheers,
Cofnchtr.