EXHIBIT 99.1

                                    AGREEMENT

      Pursuant to Rule  13d-1(f)(1)  under the Securities  Exchange Act of 1934,
the undersigned hereby agree that only one statement  containing the information
required  by  Schedule  13D (or any  amendment  thereof)  need be filed on their
behalf with  respect to the  beneficial  ownership of any equity  securities  of
Thomas Group,  Inc. or any  subsequent  acquisitions  or  disposition  of equity
securities of Thomas Group, Inc. by any of the undersigned.

Date:  August 7, 2000

                                    HOLLYBANK INVESTMENT, L.P.


                                    By: /s/ Dorsey R. Gardner
                                        ---------------------
                                          Dorsey R. Gardner
                                          General Partner



                                    THISTLE INVESTMENT LLC

                                    By: /s/ Dorsey R. Gardner
                                        ---------------------
                                          Dorsey R. Gardner
                                          Managing Member


                                        /s/ Dorsey R. Gardner
                                        ----------------------
                                          Dorsey R. Gardner