diff --git a/src/Umbraco.Core/Persistence/Repositories/MemberGroupRepository.cs b/src/Umbraco.Core/Persistence/Repositories/MemberGroupRepository.cs
index e5eef9e659..83676ae881 100644
--- a/src/Umbraco.Core/Persistence/Repositories/MemberGroupRepository.cs
+++ b/src/Umbraco.Core/Persistence/Repositories/MemberGroupRepository.cs
@@ -147,30 +147,26 @@ namespace Umbraco.Core.Persistence.Repositories
 
         public IMemberGroup CreateIfNotExists(string roleName)
         {
-            using (var transaction = Database.GetTransaction())
+            var qry = new Query<IMemberGroup>().Where(group => group.Name.Equals(roleName));
+            var result = GetByQuery(qry);
+
+            if (result.Any()) return null;
+
+            var grp = new MemberGroup
             {
-                var qry = new Query<IMemberGroup>().Where(group => group.Name.Equals(roleName));
-                var result = GetByQuery(qry);
+                Name = roleName
+            };
 
-                if (result.Any()) return null;
+            PersistNewItem(grp);
 
-                var grp = new MemberGroup
-                {
-                    Name = roleName
-                };
-                PersistNewItem(grp);
-                
-                if (SavingMemberGroup.IsRaisedEventCancelled(new SaveEventArgs<IMemberGroup>(grp), this, UnitOfWork.EventManager))
-                {
-                    return null;
-                }
-
-                transaction.Complete();
-
-                SavedMemberGroup.RaiseEvent(new SaveEventArgs<IMemberGroup>(grp), this, UnitOfWork.EventManager);
-
-                return grp;
+            if (SavingMemberGroup.IsRaisedEventCancelled(new SaveEventArgs<IMemberGroup>(grp), this, UnitOfWork.EventManager))
+            {
+                return null;
             }
+
+            SavedMemberGroup.RaiseEvent(new SaveEventArgs<IMemberGroup>(grp), this, UnitOfWork.EventManager);
+
+            return grp;
         }
 
         public IEnumerable<IMemberGroup> GetMemberGroupsForMember(int memberId)
@@ -221,51 +217,39 @@ namespace Umbraco.Core.Persistence.Repositories
 
         public void AssignRoles(string[] usernames, string[] roleNames)
         {
-            using (var transaction = Database.GetTransaction())
-            {
-                //first get the member ids based on the usernames
-                var memberSql = new Sql();
-                var memberObjectType = new Guid(Constants.ObjectTypes.Member);
-                memberSql.Select("umbracoNode.id")
-                    .From<NodeDto>()
-                    .InnerJoin<MemberDto>()
-                    .On<NodeDto, MemberDto>(dto => dto.NodeId, dto => dto.NodeId)
-                    .Where<NodeDto>(x => x.NodeObjectType == memberObjectType)
-                    .Where("cmsMember.LoginName in (@usernames)", new { usernames = usernames });
-                var memberIds = Database.Fetch<int>(memberSql).ToArray();
+            //first get the member ids based on the usernames
+            var memberSql = new Sql();
+            var memberObjectType = new Guid(Constants.ObjectTypes.Member);
+            memberSql.Select("umbracoNode.id")
+                .From<NodeDto>()
+                .InnerJoin<MemberDto>()
+                .On<NodeDto, MemberDto>(dto => dto.NodeId, dto => dto.NodeId)
+                .Where<NodeDto>(x => x.NodeObjectType == memberObjectType)
+                .Where("cmsMember.LoginName in (@usernames)", new { usernames = usernames });
+            var memberIds = Database.Fetch<int>(memberSql).ToArray();
 
-                AssignRolesInternal(memberIds, roleNames);
-                transaction.Complete();
-            }
+            AssignRolesInternal(memberIds, roleNames);            
         }
 
         public void DissociateRoles(string[] usernames, string[] roleNames)
         {
-            using (var transaction = Database.GetTransaction())
-            {
-                //first get the member ids based on the usernames
-                var memberSql = new Sql();
-                var memberObjectType = new Guid(Constants.ObjectTypes.Member);
-                memberSql.Select("umbracoNode.id")
-                    .From<NodeDto>()
-                    .InnerJoin<MemberDto>()
-                    .On<NodeDto, MemberDto>(dto => dto.NodeId, dto => dto.NodeId)
-                    .Where<NodeDto>(x => x.NodeObjectType == memberObjectType)
-                    .Where("cmsMember.LoginName in (@usernames)", new { usernames = usernames });
-                var memberIds = Database.Fetch<int>(memberSql).ToArray();
+            //first get the member ids based on the usernames
+            var memberSql = new Sql();
+            var memberObjectType = new Guid(Constants.ObjectTypes.Member);
+            memberSql.Select("umbracoNode.id")
+                .From<NodeDto>()
+                .InnerJoin<MemberDto>()
+                .On<NodeDto, MemberDto>(dto => dto.NodeId, dto => dto.NodeId)
+                .Where<NodeDto>(x => x.NodeObjectType == memberObjectType)
+                .Where("cmsMember.LoginName in (@usernames)", new { usernames = usernames });
+            var memberIds = Database.Fetch<int>(memberSql).ToArray();
 
-                DissociateRolesInternal(memberIds, roleNames);
-                transaction.Complete();
-            }
+            DissociateRolesInternal(memberIds, roleNames);
         }
 
         public void AssignRoles(int[] memberIds, string[] roleNames)
         {
-            using (var transaction = Database.GetTransaction())
-            {
-                AssignRolesInternal(memberIds, roleNames);
-                transaction.Complete();
-            }
+            AssignRolesInternal(memberIds, roleNames);
         }
 
         public void AssignRolesInternal(int[] memberIds, string[] roleNames)
@@ -333,11 +317,7 @@ namespace Umbraco.Core.Persistence.Repositories
 
         public void DissociateRoles(int[] memberIds, string[] roleNames)
         {
-            using (var transaction = Database.GetTransaction())
-            {
-                DissociateRolesInternal(memberIds, roleNames);
-                transaction.Complete();
-            }
+            DissociateRolesInternal(memberIds, roleNames);
         }
 
         private void DissociateRolesInternal(int[] memberIds, string[] roleNames)
diff --git a/src/Umbraco.Core/Services/MemberService.cs b/src/Umbraco.Core/Services/MemberService.cs
index 476d64767e..fa1b7f6cba 100644
--- a/src/Umbraco.Core/Services/MemberService.cs
+++ b/src/Umbraco.Core/Services/MemberService.cs
@@ -1067,12 +1067,13 @@ namespace Umbraco.Core.Services
             using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
             {
                 repository.CreateIfNotExists(roleName);
+                uow.Commit();
             }
         }
 
         public IEnumerable<string> GetAllRoles()
         {
-            var uow = UowProvider.GetUnitOfWork();
+            var uow = UowProvider.GetReadOnlyUnitOfWork();
             using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
             {
                 var result = repository.GetAll();
@@ -1082,7 +1083,7 @@ namespace Umbraco.Core.Services
 
         public IEnumerable<string> GetAllRoles(int memberId)
         {
-            var uow = UowProvider.GetUnitOfWork();
+            var uow = UowProvider.GetReadOnlyUnitOfWork();
             using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
             {
                 var result = repository.GetMemberGroupsForMember(memberId);
@@ -1092,7 +1093,7 @@ namespace Umbraco.Core.Services
 
         public IEnumerable<string> GetAllRoles(string username)
         {
-            var uow = UowProvider.GetUnitOfWork();
+            var uow = UowProvider.GetReadOnlyUnitOfWork();
             using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
             {
                 var result = repository.GetMemberGroupsForMember(username);
@@ -1102,7 +1103,7 @@ namespace Umbraco.Core.Services
 
         public IEnumerable<IMember> GetMembersInRole(string roleName)
         {
-            var uow = UowProvider.GetUnitOfWork();
+            var uow = UowProvider.GetReadOnlyUnitOfWork();
             using (var repository = RepositoryFactory.CreateMemberRepository(uow))
             {
                 return repository.GetByMemberGroup(roleName);
@@ -1111,7 +1112,7 @@ namespace Umbraco.Core.Services
 
         public IEnumerable<IMember> FindMembersInRole(string roleName, string usernameToMatch, StringPropertyMatchType matchType = StringPropertyMatchType.StartsWith)
         {
-            var uow = UowProvider.GetUnitOfWork();
+            var uow = UowProvider.GetReadOnlyUnitOfWork();
             using (var repository = RepositoryFactory.CreateMemberRepository(uow))
             {
                 return repository.FindMembersInRole(roleName, usernameToMatch, matchType);
@@ -1131,18 +1132,20 @@ namespace Umbraco.Core.Services
                     }
                 }
 
-                var uow = UowProvider.GetUnitOfWork();
+                List<IMemberGroup> found;
+
+                var uow = UowProvider.GetReadOnlyUnitOfWork();
                 using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
                 {
                     var qry = new Query<IMemberGroup>().Where(g => g.Name == roleName);
-                    var found = repository.GetByQuery(qry).ToArray();
-
-                    foreach (var memberGroup in found)
-                    {
-                        _memberGroupService.Delete(memberGroup);
-                    }
-                    return found.Any();
+                    found = repository.GetByQuery(qry).ToList();
                 }
+
+                foreach (var memberGroup in found)
+                {
+                    _memberGroupService.Delete(memberGroup);
+                }
+                return found.Any();
             }
         }
         public void AssignRole(string username, string roleName)
@@ -1156,6 +1159,7 @@ namespace Umbraco.Core.Services
             using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
             {
                 repository.AssignRoles(usernames, roleNames);
+                uow.Commit();
             }
         }
 
@@ -1170,6 +1174,7 @@ namespace Umbraco.Core.Services
             using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
             {
                 repository.DissociateRoles(usernames, roleNames);
+                uow.Commit();
             }
         }
 
@@ -1184,6 +1189,7 @@ namespace Umbraco.Core.Services
             using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
             {
                 repository.AssignRoles(memberIds, roleNames);
+                uow.Commit();
             }
         }
 
@@ -1198,6 +1204,7 @@ namespace Umbraco.Core.Services
             using (var repository = RepositoryFactory.CreateMemberGroupRepository(uow))
             {
                 repository.DissociateRoles(memberIds, roleNames);
+                uow.Commit();
             }
         }
 
@@ -1207,7 +1214,7 @@ namespace Umbraco.Core.Services
 
         private IMemberType FindMemberTypeByAlias(string memberTypeAlias)
         {
-            using (var repository = RepositoryFactory.CreateMemberTypeRepository(UowProvider.GetUnitOfWork()))
+            using (var repository = RepositoryFactory.CreateMemberTypeRepository(UowProvider.GetReadOnlyUnitOfWork()))
             {
                 var query = Query<IMemberType>.Builder.Where(x => x.Alias == memberTypeAlias);
                 var types = repository.GetByQuery(query);