Hertfordshire Constabulary is holding an Open Day at Police HQ on Saturday, September 10th 2011, from 11am until 3pm to commemorate 175 years of policing in the county.

The day promises to be filled with fun for all of the family and admission is absolutely FREE!

Highlights include: seeing behind-the-scenes at police HQ, firearms demonstrations, dogs demonstrations, bouncy castle, gladiator jousting, music, refreshments and tug of war. You can also bring your bicycle along for free security marking.

You can download a poster advertising the Family Open Day by clicking here.