Dog Collar Museum, Leeds Castle, Kent

Yep, this is an entire museum dedicated to dog collars. And they’re not just any common-or-garden dog collars. Oh no, most of these fine specimens are from the Middle Ages no less. If that doesn’t float your boat, there’s always the rather impressive 12th century castle to explore.

Pencil Museum, Keswick, Cumbria

Located on the site of the country’s first pencil factory, built in 1832, this graphite-loving museum celebrates the life of the humble pencil. Eighty-thousand visitors a year make the journey, most going to marvel at the world’s longest pencil!

Lawnmower Museum, Trerice, Cornwall

Believe it or not there are actually two lawnmower museums in the UK (the other is in Southport). This one, based in the grounds of Trerice House – an Elizabethan manor house, built in 1571 – has the added attraction of being a National Trust property.

Museum of Witchcraft, Boscastle, Cornwall

From garden machinery to the occult – we did say this was Britain’s most unusual collections. Founded in 1951, this museum claims to house the world's largest collection of witchcraft related artefacts and regalia.

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Colman's Mustard Shop and Museum, Norwich

Opened in 1973 to mark the 150th anniversary of the distinctly British yellow paste in a jar, the shop and museum is now home to variety of mustard related gifts and products, as well as memorabilia and artefacts from Norwich’s most famous industry.