Best Pawn Shop in London RPM Pawnbrokers. We lend money against watches and Jewellery, RPM Pawnbrokers is one of London's leading pawnbrokers. We are based in the jewellery quarter of Hatton Garden in London. Instant cash loans can be secured on items of jewellery and watches. Our rates are very competative to both trade and public customers. Best prices paid for loans of high end Jewellery. Instant quotes mean you can borrow money instantly. Pawnbroking is best for instant loans and without hassle. We deal with diamond jewellery and watch brands such as Rolex, Cartier, Audemars Piguet, Panerai, IWC, Omega and many more. Come and Pawn your valuables and receive cash in no time.