Ah ... I can see one of those lovely old railbuses running from Didcot to Westbury in the early morning ... then back up to Oxford for a quarter to 10. Daytime round trip from Oxford, via Westbury to Salisbury, then a 17:00 from Oxford to Wesbury and back up to Didcot ...
One heritage unit, one heck of a marketing / sales opportunity from Oxford to Salisbury for tourists during the day, a restored Swindon to Oxford direct service at pretty close to peak time, and a true peak hour service from West Wilts to Swindon. But where on earth at Didcot would one find heritage equipment