If you are running your aeroplane through a limited company watch out for the Inland Revenue. If the aircraft is owned by the company and is used by you for business trips you can be chaged benefit in kind. They assess this by taking an hourly rate and applying it to all the weekdays in the year regardless of weather etc. I know of one chap who got clipped for the thick end of GBP 25k about 10 years ago.
The same little witch who got him tried to get me when I had an aeoplane in my company. I had a 6 year battle before she finally let go.