I have described on an earlier thread a memorable Southern Region, South-Western Division Blackpool Illuminations ADEX on which I travelled from and/to Petersfield in November 1974, hauled throughout in both directions by 47 484 "Isambard Kingdom Brunel".
The outward journey - which had started at Portsmouth Harbour and ran via Reading, Oxford, Leamington, Coventry, Aston, Bescot, Stafford, Crewe and Preston - was uneventful and reasonably punctual.
The overnight return journey - leaving Blackpool North just after midnight - was a marathon bash of epic proportions, due to numerous engineering work sites around the network. The route was via Chorley, Bolton, Manchester Victoria, OAGB Junction, Denton, Stockport, Stoke, Stafford, Bescot, Perry Bar Junctions, Smethwick, Stourbridge Junction, Worcester Shrub Hill, Honeybourne, Gloucester Eastgate, Stroud, Swindon, Reading and Guildford. There were numerous stops and long waits for crew relief, conductor drivers/pilot guards, etc. and arrival back in Petersfield was at about 13 00 on the Sunday.
I suspect that we may have been one of the last - if not THE last - passenger trains to traverse what is now the Gloucestershire-Warwickshire Railway as, a couple of weeks later, there was a serious freight train derailment which brought about its premature demise.