Tax on 2nd property rented out but occasional use by owner

[StevieT]

My wife and I jointly own a 2nd property bought March 2004 and financed by re-mortgaging our primary residence. I used the property regularly in 2004/5 when working away from home, there was no income from it. I started working away much less and since April 2005 (how convenient) I've rented it out to a work colleague at below market rate as I still used the property ie I slept in it maybe 10 times since April 2005. Can this be treated as a business-as-usual BTL/rented or are there tax implications as I have used the property to sleep in tax year 2005/6?

[Simon Sweetman]

There are no implications about income.