Keystone Law has added five lawyers to its ranks, including two partners, as it sets it sights on achieving £25m turnover within the next three years., Keystone Law is a legal practice carried on by Keystone Law Middle East LLP in ADGM Abu Dhabi with its registered office at 14th Floor, Al Khatem Tower, ADGM Square, Al Maryah Island, DD-14-117-018, Abu Dhabi, United Arab Emirates. ADGM Registered number: 000004077. Tax Registration Number (TRN): 100489458800003.