This tower caught my eye because of the attachments. After posting on Twitter the attachments were identified as Optical Attached Cables (OPAC) by @Neil_Hardiman

I later stopped at Cut Throat Lane Switching Station, Bedford, on way home from work where you can see the OPACs terminating.

Incorporation of Optical Attached Cable and Conductors Carrying Optical Fibres into the Existing Overhead Line Network: Design and Construction

Installation of Fibre Optic Cable(s) on Steel Tower 132kV Circuits (including Fibre Wrap Method)