23 September 2013
There's no issue having 2 companies at the same registered office. As you probably know, the registered office is in the public domain so anyone with internet can see where the company is registered for free. Some people prefer to have the registered office and service address at their accountants or independent premises so that their home address doesn't appear. It's where companies house send there correspondence, junk mail etc etc. Some accountant's and companies who provide registered office facilities charge for the service some don't.
From a business point of view, there should be no issues or conflicts between both companies.