Obviously too high profile for UK to want to deal with it and get involved in somebody elses problem. I honestly thought the Pohms would play it straight down the line and eventually concede to Thaksins wishes on technical grounds.
The way it was done with the announcement being made while he was out of the country and then refusing Thaksin re-entry was quite clearly a political more than a legal move that will damage Thaksins status on the world stage.
In fact, one could almost see it as an endorsement by the UK of military coups overthrowing democracy.