It was the 747 Hong Kong Oasis!

Thank you James (& others).

It was definitely the 747 Oasis. It had tips of wings raised (?flaps). It was difficult to see the windows which suggested a cargo plane, but can see now from pictures that they can appear like a thin streak or shadow running horizontally along body of plane. The oasis letters looked vaguely like windows but not clear as letters. The tail was distinctive.

So that’s a jumbo…

I forgot to mention we saw it at around lunchtime.