What is an obstruction on law enforcement officer?

Obstruction of an Officer is quite simply not cooperating with a request he/she makes. I'm a Health and Safety inspector and if i am refused entry to a premises that is classed as obstruction. Also if i ask a member of staff for information on the company or how things are run at the premises e.g. company policies and procedures and that person fails to answer the questions then again "technically" that can be obstruction. What an Officer does about it can vary, you may cautioned on the spot and asked why you are failing to answer his/her request. You also may be invited in for an interview under caution to explain yourself as to why you obstructed the Officer. The penalty for obstruction is up to £5000 AND/OR a term in prison (up to 3 months). You can see its better to work along with Law Enforcement Officers or face the consequences!!