An unidentified Class 221 passed Silchester with 1O22, the 14:27 from Manchester Piccadilly to Bournemouth, on 15 June 2017. It's no coincidence that all my pictures on the Reading - Basingstoke line were taken at the same location, there don't appear to be any suitable alternatives.
PHOTO DATA FOR IMAGE 17-D-4206
camera : Nikon D610
lens : 70-200mm f/2.8
focal length : 86.0 mm
shutter : 1/800 sec
aperture : f/8.0
ISO : 400 ISO
original : Digital: 24MP NEF
SUBJECT DATA
Loco / Unit : 221.xxx
Train : 1O22, 14:27 Manchester Piccadilly - Bournemouth passenger