The Sony Xperia miro is now in stock in the United Kingdom through the Carphone Warehouse. There is no sim-free option as the Carphone Warehouse is only selling the phone on Vodafone at the moment, either through pay monthly contracts or as an upgrade. If you are a Vodafone customer and interested in the handset on a Pay-as-you-go basis then it will set you back £149.95 (plus £10 top up).
Sim-free stock of the Xperia miro should be arriving shortly. Clove has it for £165.60 and expects stock this week, whilst Amazon UK has it on pre-order for £205.72 and expects the handset on 5 October. O2 is also expected to directly carry the handset later this month, although pricing remains an unknown.