some help identifying this bird please

hello

spotted this bird a few hours ago on our boathouse roof,managed to grab a few pics through the dinning room widow,so sorry if pic quality isn't great

we have tried looking it up in bird books we have but it doesn't seem to match anyhting in them

can't seem to find anything like it online either so i though who better to ask than the rspb community.

me and my father are keen to know just what this bird is.

http://www.aulf01.dsl.pipex.com/images/bird/resize2.jpg

http://www.aulf01.dsl.pipex.com/images/bird/resize3.jpg

http://www.aulf01.dsl.pipex.com/images/bird/resize4.jpg

http://www.aulf01.dsl.pipex.com/images/bird/resize5.jpg

http://www.aulf01.dsl.pipex.com/images/bird/resize6.jpg

http://www.aulf01.dsl.pipex.com/images/bird/resize7.jpg

http://www.aulf01.dsl.pipex.com/images/bird/resize8.jpg

btw

not sure why i cant insert hyperlinks but im allowed to insert media/vids on here

thanks in advance

Ade