Looking back, the fights between the leather clad rockers and sharp-suited mods looks like a riot at a cosplay convention, but it was serious stuff. The rivalry between the two subcultures, one faithful to classic rock ’n’ roll, the other more modern American sounds like soul, tore up Britain in the mid 1960s.

Literally. A series of violent fracas broke out at English holiday resorts including Clacton and Brighton, with mods (riding mopeds) and rockers (riding motorcycles) going at each other with deck chairs. The incidents were overblown by a youth-fearing press (their treatment inspired the term ‘moral panic’) but it definitely got bloody.

The rivalry inspired the modish Who to make the rock opera Quadrophenia, as well as the much loved, surprisingly dull film adaptation.The year 2167: The wind blows cold across a desolate landscape. A small band of nuWhovians plan a raid on Trekker high command. A skirmish with some Team Edward scouts has left them bloody and exhausted. They need to find shelter before nightfall, when the One Direction horde emerges. They are starving. Nothing grows here since the great Fan Wars...

Fans are amazing. The dedication they show to their favourite programmes, films or bands can be truly inspiring. But when passions run this high, there are sometimes casualties. The Sherlock fanbase is currently enduring a minor civil war over 'setlock': when hundreds of fans hang around to watch the show being produced, often tweeting what they see.

In a recent RadioTimes.com survey, 70% of fans said they wanted to see the practise stop, as it interfered with filming and helped spread spoilers. However, Setlock supporters say they are allowed to be there, do not interfere and, what's more, their commitment is partly responsible for the show's success.

It's not the first time fan squabbling has got heated. The top 10 fan wars saw Sonic devotees squaring up with Mario aficionados, Team Jacob pouting at Team Edward, even One Direction have been drawn into battle...

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