A1 Scrap Metal Recycling complies with the Scrap Metal Dealers Act 2013. All it really means is that you need to bring ID & proof of address to sell your metal.
For full details on the new act please see below.

Scrap Metal Dealers Act 2013 (England & Wales only)

The Scrap Metal Dealers Act 2013 achieved Royal Assent on 28 February 2013 and its measures are expected to be implemented with effect from 1 October 2013. The new Act repeals the Scrap Metal Dealers Act 1964 and Part 1 of the Vehicles (Crime) Act 2001, creating a revised regulatory regime for the scrap metal recycling and vehicle dismantling industries in England and Wales.

The cashless trading measures brought into force via the Legal Aid, Sentencing and Punishment of Offenders Act 2012 are incorporated into the new Act, which also closes off loopholes in the earlier legislation by drawing vehicle dismantlers and former itinerant collectors into the cashless trading regime. Other changes include a new requirement for scrap metal dealers to verify the full names and addresses of sellers. Click on the following links to view the new Scrap Metal Dealers Act.

Cash trading

From 3 December 2012, changes to the Scrap Metal Dealers Act 1964 made it illegal to buy scrap metal for cash in England and Wales, and that remains in force under the Scrap Metal Dealers Act 2013 (see above). BMRA members can find further information about options for non-cash payment in members’ bulletins and on the members’ area of the web site. If you sell metal to a scrap metal dealer, do not expect to be paid in cash; if the dealer does he will be breaking the law.

Home Office guidance on cashless payments for scrap metal was issued on 24 October 2012 and may be found at www.homeoffice.gov.uk/publications/crime/scrap-metal-guidance?view=Standard&pubID=1086133.