RAF Nimrod Sighting

On my way to work this morning, (running very late) Friday March 26th, at about 9:50-55am, I seen an RAF Nimrod flying very low, I’m guesing about 500-600ft along the River Tyne here in Newcastle Upon Tyne Northeast of the UK heading towards North Shields, Tynemouth which of course if you know the area, heads out to the North sea.

I was quite surprised to see it to be honest, especially since Newcastle is quite a big built up area and with all the busy bridges on the Tyne & all, would never of thought one would fly over this part, especially how low it was, very quiet though, I could hardly hear it.

Anyone might have an idea what it was doing over this part of the UK? Apart from heading out towards the North sea?…

Regards