Well guys, after inquiring about it by sending HTC some e-mails, the guy rang me the following day and he said that just his manager said it cannot be done due to device terms and conditions and and company policies he will ask somebody much higher up if they should do it because It's such a good idea.
Sent from my HTC Sensation XE with Beats Audio using XDA
Edit: A different guy from HTC called me today and apparently he was literally in charge of HTC UK, he said that he found it a very interesting preposition BUT (=() he said that we would have to change the motherboard for the screen as well and HTC are not willing to provide the service as it would cost £100's.
HTC Sensation-----> Samsung Galaxy S2
-------> HTC ONE X
------------> SAMSUNG GALAXY NEXUS & SAMSUNG GALAXY TAB 2 10.1