Exhibit B JOINT FILING AGREEMENT The undersigned hereby agree that the Statement on Schedule 13G, dated December 21, 2005 with respect to the shares of Common Stock of Danka Business Systems PLC and any further amendments thereto executed by each and...

Exhibit B



                             JOINT FILING AGREEMENT

     The  undersigned  hereby agree that the  Statement on Schedule  13G,  dated
December 21, 2005 with  respect to the shares of Common Stock of Danka  Business
Systems PLC and any further  amendments  thereto  executed by each and any of us
shall be filed on behalf of each of us  pursuant to and in  accordance  with the
provisions of Rule  13d-1(k)(1)  under the  Securities  Exchange Act of 1934, as
amended.

     This  Agreement  may be executed in  separate  counterparts,  each of which
shall be deemed an original,  but all of which shall constitute one and the same
instrument.

         Dated: December 21, 2005


                                           POTOMAC CAPITAL MANAGEMENT LLC

                                            By:   /s/ Xxxx X. Xxxxx
                                                  Xxxx X. Xxxxx, Managing Member

                                            POTOMAC CAPITAL MANAGEMENT INC.

                                            By:   /s/ Xxxx X. Xxxxx
                                                  Xxxx X. Xxxxx, President

                                            XXXX X. XXXXX

                                            By:   /s/ Xxxx X. Xxxxx
                                                  Xxxx X. Xxxxx