While the traction equipment was being stripped from the 4-REPs and installed in the new Class 442s there was a shortage of power on the Bournemouth route and a number of class 73 electro-diesels were paired up with 4-TCs to fill the gap. 73.126 and 73.107 were photographed with a pair of 4-TCs west of Woking, working the 08:46 from Poole to Waterloo on 23 June 1988.