diff --git a/package-lock.json b/package-lock.json
index d14bd290..94d57d8d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "yoti",
-  "version": "3.7.1",
+  "version": "3.7.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index a834f247..fec1134e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "yoti",
-  "version": "3.7.1",
+  "version": "3.7.2",
   "description": "Yoti NodeJS SDK for back-end integration",
   "author": "Yoti LTD <tech@yoti.com> (https://www.yoti.com/developers)",
   "license": "MIT",
diff --git a/sonar-project.properties b/sonar-project.properties
index 8e6c3934..8698c507 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -1,6 +1,6 @@
 sonar.projectKey = yoti-web-sdk:node
 sonar.projectName = node-sdk
-sonar.projectVersion = 3.7.1
+sonar.projectVersion = 3.7.2
 sonar.exclusions=tests/**,examples/**,node_modules/**,coverage/**
 sonar.javascript.lcov.reportPaths=coverage/lcov.info
 sonar.verbose = true
\ No newline at end of file
diff --git a/src/request/request.builder.js b/src/request/request.builder.js
index fe978b8b..ef043bb7 100644
--- a/src/request/request.builder.js
+++ b/src/request/request.builder.js
@@ -162,7 +162,7 @@ class RequestBuilder {
 
     // Merge provided query params with nonce and timestamp.
     const queryString = buildQueryString(Object.assign(
-      this.queryParams || {},
+      this.queryParams,
       {
         nonce: uuid.v4(),
         timestamp: Date.now(),
diff --git a/src/request/request.handler.js b/src/request/request.handler.js
index d18140c0..6dd43b63 100644
--- a/src/request/request.handler.js
+++ b/src/request/request.handler.js
@@ -6,29 +6,46 @@ const yotiCommon = require('../yoti_common');
  * Default HTTP request handler.
  *
  * @param {YotiRequest} yotiRequest
+ * @param {boolean} buffer Return the response as a Buffer.
  *
  * @returns {Promise} Resolves {YotiResponse}
  */
-module.exports.execute = yotiRequest => new Promise((resolve, reject) => {
+module.exports.execute = (yotiRequest, buffer = false) => new Promise((resolve, reject) => {
   const request = superagent(yotiRequest.getMethod(), yotiRequest.getUrl());
 
   if (yotiCommon.requestCanSendPayload(yotiRequest.getMethod())) {
     request.send(yotiRequest.getPayload().getPayloadJSON());
   }
 
+  if (buffer === true) {
+    request.buffer(buffer);
+  }
+
   if (yotiRequest.getHeaders()) {
     request.set(yotiRequest.getHeaders());
   }
 
   request
     .then((response) => {
-      try {
-        const parsedResponse = JSON.parse(response.text);
-        const receipt = parsedResponse.receipt || null;
-        return resolve(new YotiResponse(parsedResponse, response.statusCode, receipt));
-      } catch (err) {
-        return reject(err);
+      let parsedResponse = null;
+      let body = null;
+      let receipt = null;
+
+      if (response.body instanceof Buffer) {
+        body = response.body;
+        parsedResponse = response.body;
+      } else if (response.text) {
+        body = response.text;
+        parsedResponse = response.headers['content-type'] ? response.body : JSON.parse(response.text);
+        receipt = parsedResponse.receipt || null;
       }
+
+      return resolve(new YotiResponse(
+        parsedResponse,
+        response.statusCode,
+        receipt,
+        body
+      ));
     })
     .catch((err) => {
       console.log(`Error getting data from Connect API: ${err.message}`);
diff --git a/src/request/request.js b/src/request/request.js
index 6ff9361c..6a4421b0 100644
--- a/src/request/request.js
+++ b/src/request/request.js
@@ -62,10 +62,12 @@ class YotiRequest {
   /**
    * Executes the request.
    *
+   * @param {boolean} buffer Return the response as a Buffer.
+   *
    * @returns {Promise} Resolves {YotiResponse}
    */
-  execute() {
-    return requestHandler.execute(this);
+  execute(buffer = false) {
+    return requestHandler.execute(this, buffer);
   }
 }
 
diff --git a/src/request/response.js b/src/request/response.js
index c06337c0..027aedca 100644
--- a/src/request/response.js
+++ b/src/request/response.js
@@ -8,11 +8,13 @@ class YotiResponse {
    * @param {*} parsedResponse
    * @param {int} statusCode
    * @param {Object|null} receipt
+   * @param {Buffer|string|null} body
    */
-  constructor(parsedResponse, statusCode, receipt = null) {
+  constructor(parsedResponse, statusCode, receipt = null, body = null) {
     this.parsedResponse = parsedResponse;
     this.statusCode = statusCode;
     this.receipt = receipt;
+    this.body = body;
   }
 
   /**
@@ -29,6 +31,13 @@ class YotiResponse {
     return this.parsedResponse;
   }
 
+  /**
+   * @returns {Buffer|string|null} The response body.
+   */
+  getBody() {
+    return this.body;
+  }
+
   /**
    * @returns {int} Response status code.
    */
diff --git a/tests/request/request.builder.spec.js b/tests/request/request.builder.spec.js
index 61c55a2b..a6803ed3 100644
--- a/tests/request/request.builder.spec.js
+++ b/tests/request/request.builder.spec.js
@@ -148,6 +148,30 @@ describe('RequestBuilder', () => {
       assertExpectedRequest(request, done);
     });
   });
+  describe('#withGet', () => {
+    it('should set method to GET', () => {
+      const request = new RequestBuilder()
+        .withBaseUrl(API_BASE_URL)
+        .withPemFilePath(PEM_FILE_PATH)
+        .withEndpoint(API_ENDPOINT)
+        .withGet()
+        .build();
+
+      expect(request.getMethod()).toBe('GET');
+    });
+  });
+  describe('#withPost', () => {
+    it('should set method to POST', () => {
+      const request = new RequestBuilder()
+        .withBaseUrl(API_BASE_URL)
+        .withPemFilePath(PEM_FILE_PATH)
+        .withEndpoint(API_ENDPOINT)
+        .withPost()
+        .build();
+
+      expect(request.getMethod()).toBe('POST');
+    });
+  });
   describe('#withHeader', () => {
     it('should only accept string header value', () => {
       expect(() => {
diff --git a/tests/request/request.handler.spec.js b/tests/request/request.handler.spec.js
new file mode 100644
index 00000000..176c6868
--- /dev/null
+++ b/tests/request/request.handler.spec.js
@@ -0,0 +1,176 @@
+const nock = require('nock');
+const fs = require('fs');
+const yotiRequestHandler = require('../../src/request/request.handler');
+const { RequestBuilder } = require('../../src/request/request.builder');
+const { Payload } = require('../../src/request/payload');
+
+const SOME_BASE_URL = 'https://someapi.yoti.com';
+const SOME_ENDPOINT = '/some/endpoint';
+const SOME_ENDPOINT_REG_EXP = new RegExp(`^${SOME_ENDPOINT}`);
+const SOME_PEM_STRING = fs.readFileSync('./tests/sample-data/keys/node-sdk-test.pem', 'utf8');
+const ALLOWED_METHODS = ['POST', 'PUT', 'PATCH', 'GET', 'DELETE'];
+const SOME_JSON_DATA = { some: 'json' };
+const SOME_JSON_DATA_STRING = JSON.stringify(SOME_JSON_DATA);
+const SOME_JSON_RECEIPT_DATA = { receipt: 'some receipt' };
+const SOME_JSON_RECEIPT_DATA_STRING = JSON.stringify(SOME_JSON_RECEIPT_DATA);
+const SOME_DATA = 'someData';
+const SOME_REQUEST = new RequestBuilder()
+  .withBaseUrl(SOME_BASE_URL)
+  .withEndpoint(SOME_ENDPOINT)
+  .withMethod('GET')
+  .withPemString(SOME_PEM_STRING)
+  .build();
+
+/**
+ * @param {string} method
+ * @param {string} uri
+ * @param {integer} responseCode
+ * @param {string} body
+ */
+const mockResponse = (method, uri, responseCode, body, headers) => {
+  const scope = nock(SOME_BASE_URL);
+  const interceptor = scope[method.toLowerCase()](uri);
+  interceptor.reply(responseCode, body, headers);
+};
+
+describe('yotiRequest', () => {
+  afterEach((done) => {
+    nock.cleanAll();
+    done();
+  });
+
+  ALLOWED_METHODS.forEach((ALLOWED_METHOD) => {
+    describe(`when empty response is returned for ${ALLOWED_METHOD} method`, () => {
+      beforeEach((done) => {
+        mockResponse(ALLOWED_METHOD, SOME_ENDPOINT_REG_EXP, 200, '', {
+          'content-type': 'application/json',
+        });
+        done();
+      });
+
+      it('should return YotiResponse', (done) => {
+        const request = new RequestBuilder()
+          .withBaseUrl(SOME_BASE_URL)
+          .withEndpoint(SOME_ENDPOINT)
+          .withMethod(ALLOWED_METHOD)
+          .withPayload(new Payload(''))
+          .withPemString(SOME_PEM_STRING)
+          .build();
+
+        yotiRequestHandler
+          .execute(request)
+          .then((response) => {
+            expect(response.getParsedResponse()).toBeNull();
+            expect(response.getBody()).toBeNull();
+            expect(response.getStatusCode()).toBe(200);
+            done();
+          })
+          .catch(done);
+      });
+    });
+    describe(`when JSON response is returned for ${ALLOWED_METHOD} method`, () => {
+      beforeEach((done) => {
+        mockResponse(ALLOWED_METHOD, SOME_ENDPOINT_REG_EXP, 200, SOME_JSON_DATA_STRING, {
+          'content-type': 'application/json',
+        });
+        done();
+      });
+
+      it('should return YotiResponse', (done) => {
+        const request = new RequestBuilder()
+          .withBaseUrl(SOME_BASE_URL)
+          .withEndpoint(SOME_ENDPOINT)
+          .withMethod(ALLOWED_METHOD)
+          .withPayload(new Payload(''))
+          .withPemString(SOME_PEM_STRING)
+          .build();
+
+        yotiRequestHandler
+          .execute(request)
+          .then((response) => {
+            expect(response.getParsedResponse()).toStrictEqual(SOME_JSON_DATA);
+            expect(response.getBody()).toBe(SOME_JSON_DATA_STRING);
+            expect(response.getReceipt()).toBeNull();
+            expect(response.getStatusCode()).toBe(200);
+            done();
+          })
+          .catch(done);
+      });
+    });
+  });
+  describe('when receipt is returned', () => {
+    beforeEach((done) => {
+      nock(SOME_BASE_URL)
+        .get(SOME_ENDPOINT_REG_EXP)
+        .reply(200, SOME_JSON_RECEIPT_DATA_STRING, {
+          'content-type': 'application/json',
+        });
+      done();
+    });
+
+    it('should return YotiResponse', (done) => {
+      yotiRequestHandler
+        .execute(SOME_REQUEST)
+        .then((response) => {
+          expect(response.getParsedResponse()).toStrictEqual(SOME_JSON_RECEIPT_DATA);
+          expect(response.getBody()).toBe(SOME_JSON_RECEIPT_DATA_STRING);
+          expect(response.getReceipt()).toStrictEqual(SOME_JSON_RECEIPT_DATA.receipt);
+          expect(response.getStatusCode()).toBe(200);
+          done();
+        })
+        .catch(done);
+    });
+  });
+  [
+    'application/octet-stream',
+    'application/pdf',
+    'image/jpeg',
+    'image/png',
+  ].forEach((mimeType) => {
+    describe(`when ${mimeType} content is returned`, () => {
+      beforeEach((done) => {
+        nock(SOME_BASE_URL)
+          .get(SOME_ENDPOINT_REG_EXP)
+          .reply(200, SOME_DATA, {
+            'Content-Type': mimeType,
+          });
+        done();
+      });
+      it('should return YotiResponse', (done) => {
+        yotiRequestHandler
+          .execute(SOME_REQUEST, true)
+          .then((response) => {
+            expect(response.getParsedResponse()).toBeInstanceOf(Buffer);
+            expect(response.getParsedResponse().toString()).toBe(SOME_DATA);
+            expect(response.getBody().toString()).toBe(SOME_DATA);
+            expect(response.getStatusCode()).toBe(200);
+            done();
+          })
+          .catch(done);
+      });
+    });
+  });
+  [
+    'text/plain',
+  ].forEach((mimeType) => {
+    describe(`when ${mimeType} content is returned`, () => {
+      beforeEach((done) => {
+        nock(SOME_BASE_URL)
+          .get(SOME_ENDPOINT_REG_EXP)
+          .reply(200, SOME_DATA, {
+            'Content-Type': mimeType,
+          });
+        done();
+      });
+      it('should return YotiResponse', (done) => {
+        yotiRequestHandler
+          .execute(SOME_REQUEST)
+          .then((response) => {
+            expect(response.getBody()).toBe(SOME_DATA);
+            done();
+          })
+          .catch(done);
+      });
+    });
+  });
+});
diff --git a/tests/request/request.spec.js b/tests/request/request.spec.js
index 7b58631b..939f32fd 100644
--- a/tests/request/request.spec.js
+++ b/tests/request/request.spec.js
@@ -1,6 +1,9 @@
 const { YotiRequest } = require('../../src/request/request');
+const requestHandler = require('../../src/request/request.handler');
 const { Payload } = require('../../src/request/payload');
 
+jest.mock('../../src/request/request.handler');
+
 const SOME_URL = 'https://api.example.com/some-endpoint';
 const SOME_METHOD = 'POST';
 const SOME_PAYLOAD = new Payload('some payload');
@@ -10,6 +13,20 @@ const SOME_HEADERS = {
 const SOME_REQUEST = new YotiRequest(SOME_METHOD, SOME_URL, SOME_HEADERS, SOME_PAYLOAD);
 
 describe('YotiRequest', () => {
+  describe('#execute', () => {
+    it('should execute the request handler', () => {
+      SOME_REQUEST.execute();
+      expect(requestHandler.execute).toHaveBeenCalledWith(SOME_REQUEST, false);
+    });
+    it('should execute the request handler with buffer disabled', () => {
+      SOME_REQUEST.execute(false);
+      expect(requestHandler.execute).toHaveBeenCalledWith(SOME_REQUEST, false);
+    });
+    it('should execute the request handler with buffer enabled', () => {
+      SOME_REQUEST.execute(true);
+      expect(requestHandler.execute).toHaveBeenCalledWith(SOME_REQUEST, true);
+    });
+  });
   describe('#getUrl', () => {
     it('should return the URL', () => {
       expect(SOME_REQUEST.getUrl()).toBe(SOME_URL);
diff --git a/tests/request/response.spec.js b/tests/request/response.spec.js
new file mode 100644
index 00000000..f3aa18ce
--- /dev/null
+++ b/tests/request/response.spec.js
@@ -0,0 +1,51 @@
+const { YotiResponse } = require('../../src/request/response');
+
+const SOME_BODY = '{"some":"response"}';
+const SOME_RECEIPT = { some: 'receipt' };
+const SOME_PARSED_RESPONSE = JSON.parse(SOME_BODY);
+const SOME_RESPONSE = new YotiResponse(
+  SOME_PARSED_RESPONSE,
+  200,
+  SOME_RECEIPT,
+  SOME_BODY
+);
+
+describe('YotiResponse', () => {
+  describe('#getBody', () => {
+    it('should return the body', () => {
+      expect(SOME_RESPONSE.getBody()).toBe(SOME_BODY);
+    });
+  });
+  describe('#getParsedResponse', () => {
+    it('should return the parsed response', () => {
+      expect(SOME_RESPONSE.getParsedResponse()).toBe(SOME_PARSED_RESPONSE);
+    });
+  });
+  describe('#getReceipt', () => {
+    it('should return the receipt', () => {
+      expect(SOME_RESPONSE.getReceipt()).toBe(SOME_RECEIPT);
+    });
+  });
+  describe('#getStatusCode', () => {
+    it('should return the status code', () => {
+      expect(SOME_RESPONSE.getStatusCode()).toBe(200);
+    });
+  });
+  describe('#constructor', () => {
+    it('should not require receipt', () => {
+      const SOME_RESPONSE_WITHOUT_RECEIPT = new YotiResponse(
+        SOME_PARSED_RESPONSE,
+        200
+      );
+      expect(SOME_RESPONSE_WITHOUT_RECEIPT.getReceipt()).toBeNull();
+    });
+    it('should not require body', () => {
+      const SOME_RESPONSE_WITHOUT_BODY = new YotiResponse(
+        SOME_PARSED_RESPONSE,
+        200,
+        SOME_RECEIPT
+      );
+      expect(SOME_RESPONSE_WITHOUT_BODY.getBody()).toBeNull();
+    });
+  });
+});