Meet Our Directors

Pennine’s Directors come with a breadth of knowledge and experience from in and outside of the industry. They all share a common goal; commitment to create a customer-centric culture to deliver service excellence and maintain long term customer relationships.


Mark Tinnion - Managing Director

Mark joined Pennine in March 2014, bringing to Pennine a wealth of marketing experience and skill.

His 16-year career has included significant roles at companies including Intel Corporation and the Sony Corporation, where he was part of the team that successfully launched the Sony VAIO brand into the UK and the Pentium 4 Processor into Europe.

Mark has quickly made an impact here at Pennine, defining the company brand and Mission Statement. To enhance our customer service and experience, Mark has been instrumental in creating our dedicated Aftercare department to support our customers.

Mark also led and implemented a company restructure to enable us to redefine the double-glazing experience and set new standards of service for the industry.

Graham Jenney - Installations Director

Graham has played a major role in recent years helping to drive up the profitability of Pennine.

A qualified accountant, Graham joined the business in 2007 after previously being the Managing Director of Budget Windows, where he started as finance director but soon took on a wider operational role.

Graham has made the most of that experience and skill here at Pennine, driving up efficiency in the installations operation – resulting in an enhanced customer experience.

Improvements in procurement, as well as a restructuring of the department and the operational delivery pipeline, have made us a more efficient business – and a real winner with customers.

Derek McLaren – Sales Director

Derek found himself at the helm of the sales department in 2014 after a distinguished career here at Pennine since the company started in 2006. This has included a stint as Head of Retention and an award as Top Salesman in 2012.

Derek’s goal is to maximise sales for Pennine year on year, building on already-strong foundations, and to tap into technological advancements for his skilled salesforce.

As an experienced salesperson, Derek keeps the needs of our customers at the heart of everything he does, and has developed a huge understanding of their requirements.

Long term, Derek sees great potential in extending our product line in line with customer demand and market trends across the North East region. The sky is the limit as we manufacture our own products.


It pays to put Pennine in the frame – get in touch with us today and see how we can help.

Get a free quote

or call us today on 0800 22 55 22.


Customer Reviews

"We have been quite satisfied with our new windows and so far we have no complaints."


Windows & Doors Cramlington, Northumberland
Mrs Haslam – 9th Sep 2019

"Smooth and hassle-free process, from start to finish. All of the company’s representatives were extremely professional and appeared to have...


Solid Roof Replacement Blaydon, Tyne & Wear
Gordon Makepiece – 9th Sep 2019

"Team were wonderful...cleaned up as they worked...personable professionals. I would highly recommend Pennine to anyone wishing to purchase new windows."


Windows & Doors Spennymoor, Co Durham
Mr and Mrs Heron – 9th Sep 2019

"So glad I chose french doors to replace my old patio door - looks so much nicer. Fitting team did...


Windows & Doors Newcastle-upon-tyne
Mohammed Abdalla – 29th Aug 2019

"Pennine has now installed windows and doors in two of our houses. Both jobs were completed efficiently and professionally, from...


Windows & Doors Newcastle Upon Tyne
Steve Robertson – 29th Aug 2019

"New windows ordered and ready within the 6 weeks as promised. Confirmation call the day before fitting and lads turned...


Windows & Doors Whickham, Tyne & Wear
Gary Marshall – 29th Aug 2019

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2019 All content © Crownfold Ltd T/A Pennine Home Improvements.

Crownfold Ltd is the trading name of Pennine Home Improvements

Credit is subject to application and affordability. Terms and conditions apply. Minimum loan value £1,000. Authorised and regulated by the Financial Conduct Authority. Pennine Home Improvements (Registered Company No. 2342225) act a credit broker and is authorised and regulated by the Financial Conduct Authority. Credit provided by Hitachi Personal Finance, a trading style of Hitachi Capital (UK) PLC, authorised and regulated by the Financial Conduct Authority (Register no. 704348).