Three UK has joined with HTC to offer latest flagship One M9. It is listed for pre-order with a £19 upfront cost and £39 / month for 24 months contract. For this plan, you will get free 0800/0808/0500 calls and unlimited texts, also 1GB 4G data.
Last one expensive plan is £47.00 / month with 2 Years contract. In this you will get unlimited 4G data, calls and texts.
The phone can be purchased in either Rose/Silver gold and Gunmetal Grey variants.
Source : Three UK