GBRF 73964 & 73963 power past Derby Road working 2Q08

In this video I went to Derby road station to see two GBRF class 73s on a test train. This is a very unusual consist for the Felixstowe branch line. The two 73s were called in to replace the 950 unit as it failed. I choose Derby Road station to view the test train because it was empty of passengers, and I could Maintain social distancing measures while filming the two locos.