On Wednesday afternoon, travelling via WAGN to Moorgate, just before
Harringay I noticed an outward bound train, mainly stock but with a
mysterious Police labelled train at the back. I was unsure if this was
powering/pushing the coaches in front (I only got a quick glance) but it was
mainly white with an orange mid-section with huge words POLICE. Not very
conspicuous. Does anyone know what it would be? I was quite bemused that the
police should have their own locomotive.

M.