diff --git a/src/ai/api/ai_industry.cpp b/src/ai/api/ai_industry.cpp
--- a/src/ai/api/ai_industry.cpp
+++ b/src/ai/api/ai_industry.cpp
@@ -13,7 +13,7 @@
 
 /* static */ int32 AIIndustry::GetIndustryCount()
 {
-	return ::GetNumIndustries();
+	return (int32)::Industry::GetNumItems();
 }
 
 /* static */ bool AIIndustry::IsValidIndustry(IndustryID industry_id)
diff --git a/src/ai/api/ai_sign.cpp b/src/ai/api/ai_sign.cpp
--- a/src/ai/api/ai_sign.cpp
+++ b/src/ai/api/ai_sign.cpp
@@ -15,7 +15,7 @@
 
 /* static */ SignID AISign::GetMaxSignID()
 {
-	return ::Sign::GetPoolSize() - 1;
+	return (SignID)::Sign::GetNumItems();
 }
 
 /* static */ bool AISign::IsValidSign(SignID sign_id)
diff --git a/src/ai/api/ai_town.cpp b/src/ai/api/ai_town.cpp
--- a/src/ai/api/ai_town.cpp
+++ b/src/ai/api/ai_town.cpp
@@ -16,7 +16,7 @@
 
 /* static */ int32 AITown::GetTownCount()
 {
-	return ::GetNumTowns();
+	return (int32)::Town::GetNumItems();
 }
 
 /* static */ bool AITown::IsValidTown(TownID town_id)
diff --git a/src/company_base.h b/src/company_base.h
--- a/src/company_base.h
+++ b/src/company_base.h
@@ -84,11 +84,6 @@ struct Company : CompanyPool::PoolItem<&
 #define FOR_ALL_COMPANIES_FROM(var, start) FOR_ALL_ITEMS_FROM(Company, company_index, var, start)
 #define FOR_ALL_COMPANIES(var) FOR_ALL_COMPANIES_FROM(var, 0)
 
-static inline byte ActiveCompanyCount()
-{
-	return (byte)Company::GetNumItems();
-}
-
 Money CalculateCompanyValue(const Company *c);
 
 extern uint _next_competitor_start;
diff --git a/src/company_cmd.cpp b/src/company_cmd.cpp
--- a/src/company_cmd.cpp
+++ b/src/company_cmd.cpp
@@ -469,7 +469,7 @@ void StartupCompanies()
 static void MaybeStartNewCompany()
 {
 #ifdef ENABLE_NETWORK
-	if (_networking && ActiveCompanyCount() >= _settings_client.network.max_companies) return;
+	if (_networking && Company::GetNumItems() >= _settings_client.network.max_companies) return;
 #endif /* ENABLE_NETWORK */
 
 	Company *c;
diff --git a/src/console_cmds.cpp b/src/console_cmds.cpp
--- a/src/console_cmds.cpp
+++ b/src/console_cmds.cpp
@@ -551,7 +551,7 @@ DEF_CONSOLE_CMD(ConServerInfo)
 	}
 
 	IConsolePrintF(CC_DEFAULT, "Current/maximum clients:    %2d/%2d", _network_game_info.clients_on, _settings_client.network.max_clients);
-	IConsolePrintF(CC_DEFAULT, "Current/maximum companies:  %2d/%2d", ActiveCompanyCount(), _settings_client.network.max_companies);
+	IConsolePrintF(CC_DEFAULT, "Current/maximum companies:  %2d/%2d", (int)Company::GetNumItems(), _settings_client.network.max_companies);
 	IConsolePrintF(CC_DEFAULT, "Current/maximum spectators: %2d/%2d", NetworkSpectatorCount(), _settings_client.network.max_spectators);
 
 	return true;
@@ -980,7 +980,7 @@ DEF_CONSOLE_CMD(ConStartAI)
 		return true;
 	}
 
-	if (ActiveCompanyCount() == MAX_COMPANIES) {
+	if (Company::GetNumItems() == CompanyPool::MAX_SIZE) {
 		IConsoleWarning("Can't start a new AI (no more free slots).");
 		return true;
 	}
diff --git a/src/industry.h b/src/industry.h
--- a/src/industry.h
+++ b/src/industry.h
@@ -266,11 +266,6 @@ void SetIndustryDailyChanges();
 
 extern uint16 _industry_counts[NUM_INDUSTRYTYPES]; // Number of industries per type ingame
 
-static inline uint GetNumIndustries()
-{
-	return (uint)Industry::GetNumItems();
-}
-
 /** Increment the count of industries for this type
  * @param type IndustryType to increment
  * @pre type < INVALID_INDUSTRYTYPE */
@@ -310,11 +305,11 @@ static inline void ResetIndustryCounts()
  */
 static inline Industry *GetRandomIndustry()
 {
-	int num = RandomRange(GetNumIndustries());
+	if (Industry::GetNumItems() == 0) return NULL;
+
+	int num = RandomRange((uint16)Industry::GetNumItems());
 	IndustryID index = INVALID_INDUSTRY;
 
-	if (GetNumIndustries() == 0) return NULL;
-
 	while (num >= 0) {
 		num--;
 		index++;
diff --git a/src/industry_gui.cpp b/src/industry_gui.cpp
--- a/src/industry_gui.cpp
+++ b/src/industry_gui.cpp
@@ -334,7 +334,7 @@ public:
 				if (this->selected_type == INVALID_INDUSTRYTYPE) {
 					this->HandleButtonClick(DPIW_FUND_WIDGET);
 
-					if (GetNumTowns() == 0) {
+					if (Town::GetNumItems() == 0) {
 						ShowErrorMessage(STR_ERROR_MUST_BUILD_TOWN_FIRST, STR_CAN_T_GENERATE_INDUSTRIES, 0, 0);
 					} else {
 						extern void GenerateIndustries();
@@ -368,7 +368,7 @@ public:
 
 		if (_game_mode == GM_EDITOR) {
 			/* Show error if no town exists at all */
-			if (GetNumTowns() == 0) {
+			if (Town::GetNumItems() == 0) {
 				SetDParam(0, indsp->name);
 				ShowErrorMessage(STR_ERROR_MUST_BUILD_TOWN_FIRST, STR_ERROR_CAN_T_BUILD_HERE, pt.x, pt.y);
 				return;
diff --git a/src/network/network_client.cpp b/src/network/network_client.cpp
--- a/src/network/network_client.cpp
+++ b/src/network/network_client.cpp
@@ -1021,7 +1021,7 @@ bool NetworkClientPreferTeamChat(const N
  */
 bool NetworkMaxCompaniesReached()
 {
-	return ActiveCompanyCount() >= (_network_server ? _settings_client.network.max_companies : _network_server_max_companies);
+	return Company::GetNumItems() >= (_network_server ? _settings_client.network.max_companies : _network_server_max_companies);
 }
 
 /**
diff --git a/src/network/network_server.cpp b/src/network/network_server.cpp
--- a/src/network/network_server.cpp
+++ b/src/network/network_server.cpp
@@ -674,7 +674,7 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT
 	/* join another company does not affect these values */
 	switch (playas) {
 		case COMPANY_NEW_COMPANY: // New company
-			if (ActiveCompanyCount() >= _settings_client.network.max_companies) {
+			if (Company::GetNumItems() >= _settings_client.network.max_companies) {
 				SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_FULL);
 				return;
 			}
@@ -901,7 +901,7 @@ DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT
 		}
 
 		/* Check if we are full - else it's possible for spectators to send a CMD_COMPANY_CTRL and the company is created regardless of max_companies! */
-		if (ActiveCompanyCount() >= _settings_client.network.max_companies) {
+		if (Company::GetNumItems() >= _settings_client.network.max_companies) {
 			NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_CLIENT, ci->client_id, "cannot create new company, server full", CLIENT_ID_SERVER);
 			return;
 		}
diff --git a/src/network/network_udp.cpp b/src/network/network_udp.cpp
--- a/src/network/network_udp.cpp
+++ b/src/network/network_udp.cpp
@@ -95,7 +95,7 @@ DEF_UDP_RECEIVE_COMMAND(Server, PACKET_U
 	ngi.server_lang    = _settings_client.network.server_lang;
 	ngi.use_password   = !StrEmpty(_settings_client.network.server_password);
 	ngi.clients_max    = _settings_client.network.max_clients;
-	ngi.companies_on   = ActiveCompanyCount();
+	ngi.companies_on   = (byte)Company::GetNumItems();
 	ngi.companies_max  = _settings_client.network.max_companies;
 	ngi.spectators_on  = NetworkSpectatorCount();
 	ngi.spectators_max = _settings_client.network.max_spectators;
@@ -128,7 +128,7 @@ DEF_UDP_RECEIVE_COMMAND(Server, PACKET_U
 
 	/* Send the amount of active companies */
 	packet.Send_uint8 (NETWORK_COMPANY_INFO_VERSION);
-	packet.Send_uint8 (ActiveCompanyCount());
+	packet.Send_uint8 ((uint8)Company::GetNumItems());
 
 	/* Fetch the latest version of the stats */
 	NetworkCompanyStats company_stats[MAX_COMPANIES];
diff --git a/src/settings_gui.cpp b/src/settings_gui.cpp
--- a/src/settings_gui.cpp
+++ b/src/settings_gui.cpp
@@ -142,7 +142,7 @@ static void ShowTownnameDropdown(Window 
 
 	DropDownList *list = new DropDownList();
 	for (TownList::iterator it = townnames.begin(); it != townnames.end(); it++) {
-		list->push_back(new DropDownListStringItem((*it).first, (*it).second, !(_game_mode == GM_MENU || GetNumTowns() == 0 || (*it).second == sel)));
+		list->push_back(new DropDownListStringItem((*it).first, (*it).second, !(_game_mode == GM_MENU || Town::GetNumItems() == 0 || (*it).second == sel)));
 	}
 
 	ShowDropDownList(w, list, sel, GOW_TOWNNAME_DROPDOWN);
@@ -305,7 +305,7 @@ struct GameOptionsWindow : Window {
 				break;
 
 			case GOW_TOWNNAME_DROPDOWN: // Town names
-				if (_game_mode == GM_MENU || GetNumTowns() == 0) {
+				if (_game_mode == GM_MENU || Town::GetNumItems() == 0) {
 					this->opt->game_creation.town_name = index;
 					InvalidateWindow(WC_GAME_OPTIONS, 0);
 				}
diff --git a/src/toolbar_gui.cpp b/src/toolbar_gui.cpp
--- a/src/toolbar_gui.cpp
+++ b/src/toolbar_gui.cpp
@@ -1036,7 +1036,7 @@ struct MainToolbarWindow : Window {
 		 * Since enabled state is the default, just disable when needed */
 		this->SetWidgetsDisabledState(_local_company == COMPANY_SPECTATOR, TBN_RAILS, TBN_ROADS, TBN_WATER, TBN_AIR, TBN_LANDSCAPE, WIDGET_LIST_END);
 		/* disable company list drop downs, if there are no companies */
-		this->SetWidgetsDisabledState(ActiveCompanyCount() == TBN_PAUSE, TBN_STATIONS, TBN_FINANCES, TBN_TRAINS, TBN_ROADVEHS, TBN_SHIPS, TBN_AIRCRAFTS, WIDGET_LIST_END);
+		this->SetWidgetsDisabledState(Company::GetNumItems() == TBN_PAUSE, TBN_STATIONS, TBN_FINANCES, TBN_TRAINS, TBN_ROADVEHS, TBN_SHIPS, TBN_AIRCRAFTS, WIDGET_LIST_END);
 
 		this->SetWidgetDisabledState(TBN_RAILS, !CanBuildVehicleInfrastructure(VEH_TRAIN));
 		this->SetWidgetDisabledState(TBN_AIR, !CanBuildVehicleInfrastructure(VEH_AIRCRAFT));
diff --git a/src/town.h b/src/town.h
--- a/src/town.h
+++ b/src/town.h
@@ -294,17 +294,12 @@ static inline HouseSpec *GetHouseSpecs(H
 
 TileIndexDiff GetHouseNorthPart(HouseID &house);
 
-static inline uint GetNumTowns()
-{
-	return (uint)Town::GetNumItems();
-}
-
 /**
  * Return a random valid town.
  */
 static inline Town *GetRandomTown()
 {
-	int num = RandomRange(GetNumTowns());
+	int num = RandomRange((uint16)Town::GetNumItems());
 	TownID index = INVALID_TOWN;
 
 	while (num >= 0) {
diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp
--- a/src/town_cmd.cpp
+++ b/src/town_cmd.cpp
@@ -1760,7 +1760,7 @@ bool GenerateTowns(TownLayout layout)
 
 	/* give it a last try, but now more aggressive */
 	if (num == 0 && CreateRandomTown(10000, TS_RANDOM, _settings_game.economy.larger_towns != 0, layout) == NULL) {
-		if (GetNumTowns() == 0) {
+		if (Town::GetNumItems() == 0) {
 			if (_game_mode != GM_EDITOR) {
 				extern StringID _switch_mode_errorstr;
 				_switch_mode_errorstr = STR_COULD_NOT_CREATE_TOWN;
@@ -2709,7 +2709,7 @@ Town *ClosestTownFromTile(TileIndex tile
 				if (tid == (TownID)INVALID_TOWN) {
 					/* in the case we are generating "many random towns", this value may be INVALID_TOWN */
 					if (_generating_world) return CalcClosestTownFromTile(tile, threshold);
-					assert(GetNumTowns() == 0);
+					assert(Town::GetNumItems() == 0);
 					return NULL;
 				}