Aircraft help for LHR arrival.

Hi all, wondering if you can help me at all? Just been out in the back garden and a (well what looked like) 777-200 flew over.

Dont know though at all what it was airline wise. Had blue Engines and a blue tail, which had a blue band coming off of this wrapping around the underside of the fuselage beneath the tail. The rest of the aircraft was white… couldn’t make out any titles on it.

It probably landed at LHR at 8:10pm local time, as it flew over here at around 8:00pm.

Any help would be very much appreciated.