The (UK) Law
The protection of Badgers Act 1992 (1992 chapter 51)
An Act to consolidate the Badgers Act 1973, the Badgers Act 1991 and further protection 16th July 1992 from Her Majesty's Stationery Office at the time of writing the cost was only £3.20 +PP+VAT
In brief it is an Offence to:
Willfully kill, injure or take a badger or attempt to do so unless permitted under the Act.

cruelly ill-treat a badger or use any Badger tongs.
Possess a dead badger or anything derived from a dead badger
to offer for sale or have in possession a live badger or under his control.
to damage or destroy a sett or part of a sett, causing a dog to enter a badger sett, obstructing access any entrance.

where a constable has reasonable grounds that an offence has been committed may, and without warrant, stop and search any person, and any vehicle or article which that person may have with him/her. Also, to seize any badger or weapon or article used in the offence.
A custodial sentence of up to six months can be imposed and the current penalties include a maximum fine of level 5 per badger involved.
The courts also have powers to dispose of dogs used in offences and disqualify offenders from keeping dogs for any period .
Sett disturbance/destruction however caused requires a licence to be obtained, except for a basic sett survey to check its occupancy and emergency work, eg. rescue of injured badgers.

There are exceptions to the above covered under the Act. If you require further details please obtain a summary copy.