I was looking on Google maps at the uxbridge branch of the met line, and I
noticed a spur between Hillingdon and Ickenham.

I followed this spur and it seemed to link to a depot and then towards the
central / chiltern line.

I had no idea this connection existed. Is this connection in use?

Also when LU send stock to leeds / derby for repair why do they use road
freight instead of rail?