Found 30th Dec 2017
Sony Bravia KD55A1BU OLED HDR 4K Ultra HD Smart Android TV, 55" with Acoustic Surface for £1999 after £300 cash back @ RGB Direct
Claim £300 cashback from Sony - instore purchase only
RGB direct are selling it for £2299.00 plus you can claim £300 cashback direct from Sony which would bring the price for this TV for under £2000.
I believe John Lewis should be able to price match this TV too. It is listed at John Lewis for £2499 with £300 discount already applied so this deal sounds like a big bargain.
The John Lewis link is as follows:
Hope you guys find this useful