help with bird identification

Observation - help with bird identification. Description: This bird flew acorss a large pond area over large reeds and into a hedge. As it flew by I would describe it as a small bird which looked very much like a tit, the colour appeared to be black and white and looked quite stripey, but it flew by very quick.

This bird flew acorss a large pond area over large reeds and into a hedge. As it flew by I would describe it as a small bird which looked very much like a tit, the colour appeared to be black and white and looked quite stripey, but it flew by very quick.