Our booking engine at tickets.railforums.co.uk (powered by TrainSplit) helps support the running of the forum with every ticket purchase! Find out more and ask any questions/give us feedback in this thread!
I believe, that I would also see the North Wessex Downs near the Newbury (Woolton Hill) - 96km, however, the proximity of the Sun didn't let me identify this region properly.
The furthest views from the Shard are:
East:
Dover Transmitter Mast - 98km
South:
South Downs National Park
West:
Didcot Powerplant - 80km
Farleigh Walloop hill near Basingtoke - 78km
North:
Therfield Heat near Royston - 57km
Read more details here...