diff --git a/src/middlewares/auth.middlewares.ts b/src/middlewares/auth.middlewares.ts
index 41b5468..ea6f105 100644
--- a/src/middlewares/auth.middlewares.ts
+++ b/src/middlewares/auth.middlewares.ts
@@ -3,7 +3,11 @@ import { NextFunction, Request, Response } from "express";
 const utils = require("../utils/auth.utils");
 const logger = require("../utils/logger.utils");
 
-module.exports = async function authCheck(req: Request, res: Response, next: NextFunction) {
+module.exports = async function authCheck(
+  req: Request,
+  res: Response,
+  next: NextFunction
+) {
   logger.logger.debug("auth.middleware: Auth check begun");
   if (process.env.NODE_ENV === "development") {
     req.isAuthed = true;
@@ -11,12 +15,12 @@ module.exports = async function authCheck(req: Request, res: Response, next: Nex
     next();
   } else {
     const id: string | string[] | undefined = req.headers.uuid;
-    if (typeof id === 'undefined') {
+    if (typeof id === "undefined") {
       req.isAuthed = false;
       logger.logger.info("auth.middleware: Authentication failed");
       next();
-    } else if (typeof id === 'string') {
-      const authCheck = await utils.isAuthed(id) || false;
+    } else if (typeof id === "string") {
+      const authCheck = (await utils.isAuthed(id)) || false;
       if (authCheck) {
         req.isAuthed = true;
         logger.logger.info("auth.middleware: Authentication Successful");
@@ -27,14 +31,18 @@ module.exports = async function authCheck(req: Request, res: Response, next: Nex
         next();
       }
     } else if (Array.isArray(id)) {
-      const authCheck = await utils.isAuthed(id[0]) || false;
+      const authCheck = (await utils.isAuthed(id[0])) || false;
       if (authCheck) {
         req.isAuthed = true;
-        logger.logger.warn("auth.middleware: UUID Passed as Array - Authentication Successful");
+        logger.logger.warn(
+          "auth.middleware: UUID Passed as Array - Authentication Successful"
+        );
         next();
       } else {
         req.isAuthed = false;
-        logger.logger.warn("auth.middleware: UUID Passed as Array - Authentication Failed");
+        logger.logger.warn(
+          "auth.middleware: UUID Passed as Array - Authentication Failed"
+        );
         next();
       }
     }
diff --git a/src/services/trainService.services.ts b/src/services/trainService.services.ts
index 449758c..995fe32 100644
--- a/src/services/trainService.services.ts
+++ b/src/services/trainService.services.ts
@@ -80,10 +80,10 @@ export async function findByTrainUid(
   if (supported.includes(services[0]?.operator)) {
     pis = await fetchPisCode(services[0]?.stops);
   } else {
-    pis = null
+    pis = null;
   }
   // TODO: Format and return data, the function called is not yet complete
-  return formatTimetableDetail(services[0], pis)
+  return formatTimetableDetail(services[0], pis);
 }
 
 // Internal Functions:
@@ -97,25 +97,25 @@ async function fetchPisCode(
     if (stops[stop]["isPublic"]) tiplocList.push(stops[stop]["tiploc"]);
   }
   // Check if no public stops - then it should use an ECS headcode
-  let pisData: OB_Pis_SimpleObject | null
+  let pisData: OB_Pis_SimpleObject | null;
   if (tiplocList.length) {
     pisData = await findByTiplocArray(tiplocList);
   } else {
     pisData = {
       toc: "GW",
       skipCount: 0,
-      code: randomEcsPis()
-    }
+      code: randomEcsPis(),
+    };
   }
-  
+
   return pisData;
 }
 
 // Picks a random choice of the ECS PIS Codes
 function randomEcsPis(): string {
-  const options = ["0015", "9997"]
-  const randomValue = Math.floor(Math.random() * 2 )
-  return options[randomValue]
+  const options = ["0015", "9997"];
+  const randomValue = Math.floor(Math.random() * 2);
+  return options[randomValue];
 }
 
 // Outputs the standard 'shortday' string from a Date.
@@ -169,9 +169,8 @@ function filterServices(services: SimpleService[]): SimpleService[] {
     const stpIndicator = service["stpIndicator"];
 
     if (stpIndicator === "C") {
-      continue;
-    }
-    if (stpIndicator === "N" && !thisStpIndicators.hasC) {
+      filteredServices.push(service);
+    } else if (stpIndicator === "N" && !thisStpIndicators.hasC) {
       filteredServices.push(service);
     } else if (
       stpIndicator === "O" &&
diff --git a/src/types/index.d.ts b/src/types/index.d.ts
index d6e7e36..48fb262 100644
--- a/src/types/index.d.ts
+++ b/src/types/index.d.ts
@@ -1,7 +1,7 @@
 // src/types/express/index.d.ts
 
 // to make the file a module and avoid the TypeScript error
-export {}
+export {};
 
 declare global {
   namespace Express {
@@ -9,4 +9,4 @@ declare global {
       isAuthed: boolean;
     }
   }
-}
\ No newline at end of file
+}