Our People

SealesWinslow has a team of experts covering the entire country.

0800 287 325

Nutrition & Quality Manager
Natalie Hughes

Leadership team

"Natalie has a Diploma in Agriculture which was the building block for a Bachelor in Agriculture Science at Lincoln University. Working for Lincoln University in two different research sectors whilst studying and then full time once graduated, Natalie developed a greater understanding of pasture production and animal nutrition requirements.

With a love of dairy farming and a research background, Natalie joined up with Altum (now Ballance) in 2012 as a Business Extension Specialist.  In August 2015 Natalie moved to the animal nutrition side of the Ballance business, SealesWinslow, as Science Extension, North Island."

Animal Nutrition TSR - Eastern Bay of Plenty, Rotorua, Taupo
Mark Mellsop

Sales Team

Chances are you might already know Mark, who joined SealesWinslow at the beginning of 2012.  Before that he was with RD1 for over 20 years, including a long stretch as branch manager of the Reporoa and Te Puke stores. 

Mark is SealesWinslow Technical Sales Representative for Tauranga, Whakatane, Rotorua and surrounding areas within the Bay of Plenty.

Having supported farmers all his working life, Mark has a great understanding of the dairy industry and the challenges and opportunities that go with it.  His knowledge of local conditions is unbeatable and he’s a great person to turn to for advice on increasing the health and performance of your herd. 

SealesWinslow Sci Extn NI Contractor
Paul Sharp

Nutrition Team

"Paul has an extensive background in agricultural production systems consultancy and an in-depth experience in strategic development and practical implementation of dairy and ruminant farming systems.  He has provided consultancy services both in New Zealand and internationally for Dairy Beef Solutionz Ltd, Nutrition Services Ltd, Ravensdown Co-operative, AgResearch Limited and Intelact Nutrition Limited, among others.

Paul has a Bachelor of Agricultural Science with Honours, majoring in plant science and intensive dairy systems, and is a member of New Zealand Grasslands Association, New Zealand Society of Animal Production, New Zealand Association of Scientists and New Zealand Association of Ruminant Nutritionists.

With strong expertise in dairy, beef, goat and sheep nutrition, Paul provides technical extension and training to the SealesWinslow team."

Regional Sales Manager Northern
Ryan Scholes

Leadership Team

Before joining SealesWinslow in 2010, Ryan was with Anexa Animal Health. Having worked closely with dairy farmers for almost a decade, Ryan has a good grasp of what it takes to be successful in the dairy industry.

Ryan is passionate about helping local farmers improve the health and performance of their herds in the Matamata, South Waikato and Waihi areas.

Animal Nutrition TSR - Lower North Island
Danny Prodger

Sales Team

Danny has been involved in farming in some way for most of his life, from his nearly two decades hands on farming experience in both dairy and sheep & beef sectors to his time spent working for Open Country Dairy.  He has also spent several years selling lifestyle and residential real estate.

Danny has a Diploma in Farm Management which he completed while he was farming.

Danny advices farmers on the health and performance of their herd in the area ranging from Hawera to Napier, to Martinborugh and Otaki.

Regional Manager Central
Darryn McDonnell

Leadership Team

“Darryn has a wide range of experience in production and operations roles from a 16 year period at George Weston Foods and Weston Animal Nutrition. 

He joined SealesWinslow (Ashburton site) in late 2012 as the Operations Manager and in August 2016, relocated to the North Island as Regional Manager for our central region.

Darryn’s an avid communicator who’s passionate about building a team with a strong customer focus. Darryn and his family live on a small lifestyle block near Whanganui."

SealesWinslow TSR South Waikato, Waipa, King Country
Sue Avison

Sales Team

Sue joined the SealesWinlow team based in Morrinsville as a customer service assistant in 2007.

Having previously worked for 17 years in the service department at Maber Motors (part of Power Farming) assisting farmers with service and repairs, Sue brings an abundance of understanding of what is important to farmers.

As a local to Morrinsville for the last 25 years, Sue knows the people and area intimately, a huge advantage in her current role as Technical Sales Representative for the South Waikato area.

Sue loves all animals, so enjoys getting to know her customers and working with them to ensure they have the best possible solutions for their herds health and performance.

Regional Ops Manager Southern & Northern
Tyler Stuthridge

Leadership Team

“Tyler was born and bred in Ashburton and having completed his training at local business RX Plastics, Tyler is a qualified engineer.

Tyler joined SealesWinslow (Ashburton site) in May 2013 as an engineer and quickly emerged as a natural leader. Tyler became the site Operations Manager in December 2016 and was promoted to Regional Manager in July 2017.

Tyler is passionate about running a quality driven site. When he’s not working, Tyler enjoys motor cross and trail bike riding.”

Customer Exp & Shared Services Manager
Nardia Crosby

Leadership Team

"Prior to joining SealesWinslow in 2013 Nardia spent 12 years working in the United Kingdom in Banking, Communications and Research and Development departments as a Service Delivery Manager, ensuring that IT related services and customer service desks ran smoothly.  Back in New Zealand, Nardia worked in the forestry industry as a project manager.   

Nardia has a Masters in Science from Waikato University, majoring in Earth Sciences (Volcanology).

Nardia is passionate about building strong customer services teams and developing processes that mean swift and efficient service to customers."

SealesWinslow Commercial Manager
Bruce Harris

Leadership Team

Bruce has a life long association with farming having attained the top performing supplier to Northland Dairy in the mid 1990’s. As a qualified accountant Bruce spent fifteen years in public practice in Whangarei and a further fifteen years with Ballance more recent taking up the role of Commercial Manager with SealesWinslow.

Bruce attained a MBA (Master of Business Administration) from the University of Waikato in 2010 and has been a qualified accountant for 27 years.

Bruce is very passionate about people and businesses performing to their maximum potential focusing on developing people to drive the best performance from the business ensuring the business is attaining its strategic goals.

Animal Nutrition TSR - South Canterbury
Kimberley Wright

Sales Team

Kimberley has joined SealesWinslow as a Technical Service Representative for the South Canterbury and Otago areas. Having spent nine years in the dairy industry and being born and raised in Canterbury, Kimberley brings a lot of experience of best farm practices for her region. 

Kimberley is passionate about animal health, even to the point of studying this very subject with Primary ITO along with husbandry and mating for the dairy industry.  Her passion, experience and knowledge were clearly demonstrated by winning apprentice of the year in 2013.

Farmers in her region will find that Kimberley is happy to discuss the needs of their herds and offer suggestions for improving health and performance.

Family and friends are an important part of Kimberley’s leisure time and will on occasion join Kimberley in her other passions, camping and hockey. 

Animal Nutrition TSR - North Canterbury
Tara Campbell

Sales Team

Tara has as a background spending 7 years as an All Rounder operator in NZ and Australia mining sector then recently spending 3 years on a dairy farm just out of Methven.

Tara is passionate about animals and farming especially helping improving performance and health.

Animal Nutrition TSR -Taranaki
John Baldie

Sales Team

John joined SealesWinslow in May 2018 from share milker to farm owner, John has farmed in the UK, Australia and for over 20 years in New Zealand. John has a nutritional background from the UK and holds an advanced trade certificate in Farm Business Management.

He has an absolute passion for feeding all stock to meet their full potential. 
Now living in the heart of Taranaki on the coast and loving every minute of life.

Animal Nutrition TSR - Lower North Island
Mike Kemp

Sales Team

Mike has joined SealesWinslow as the merchant animal nutrition TSR for the central region.
Prior to this he has spent the last 12 year in the agriculture industry 7 of those travelling the country for Asure Quality mainly as Meat Inspector but also a part of the ‘on farm’ team, throughout that period Mike has seen the internal effects of poor health and nutrition first hand.

Mike has also worked at a merchant level in the dairy sector for the past 2 years so he is passionate about helping his customers achieve their store business goals with SealesWinslow.

Mike can be seen visiting stores from Wellington to New Plymouth and across to Gisborne.


Animal Nutrition TSR Hauraki, Western BOP, East Waikato
SealesWinslow team - Vanessa Lilly
Vanessa Lilly

Sales Team

Vanessa joined SealesWinslow in March 2019 as a TSR for the northern BOP region, after having completed the Ballance Agri-Nutrients Sales Internship in the Eastern Bay of Plenty. 
Vanessa grew up on a dairy farm in coastal Taranaki, and has a Masters in Animal Science from Massey University, Palmerston North, which focused on animal production, reproduction and lactation. Prior to joining Ballance Agri-Nutrients, Vanessa was involved in the thoroughbred racing industry, breaking in and pre-training young horses.
In her spare time, Vanessa remains involved in the horse racing industry, as well as being involved in drag racing. 


Animal Nutrition TSR - Franklin, North West Waikato
SealesWinslow team - Spencer Hickford
Spencer Hickford

Sales Team

Spencer brings to his role as TSR for the North-West Waikato region, an extensive farming background with experience using various farm systems.  Added to this Spence has completed a farm cadetship with AgITO.

Putting all of that experience to good use, Spence worked for Farm Source in a sales role and later in a management role leading a team of seven TSR’s in the Waikato area. 

Spence is very used to working in the rural industry and along with his vast experience and knowledge of stock and feed, is a registered milking machine tester, dairy machine fitter and vet technician.

Being very passionate about the rural industry Spence is only too willing to assist farmers, providing options and solutions to reach optimum farm performance.

National Supply Chain & Regional Manager
SealesWinslow team - SLT Williams
Mark Williams

Leadership Team

Mark comes from a sales and logistics background managing up to 70 staff in a manufacturing plant.
Mark was looking for employment close to home, after him and his wife moved to Morrinsville three years ago.  Mark decided that as the parent company of SealesWinslow is Ballance Agri-nutrients, known to be a great place to work, joined the SealesWinslow team as Morrinsville site manager.
Within his first year with SealesWinslow, Mark has been promoted to Regional Manager Northern. He is working towards identifying and developing talent within SealesWinslow.  He loves to see people grow and is thoroughly enjoying getting to know and to work with the Morrinsville and wider SealesWinslow teams.
Mark and Maureen have two sons and four grandchildren living in the Waikato area, so not too far to go and visit in their 1938 Chevy Flatback.

Regional Sales Manager Southern
SealesWinslow team - Andrew Mitchell
Andrew Mitchell

Leadership team

Previously a dairy farmer for 28 years, Andrew’s farming ranged from being a Federated Farmer Cadet to equity partnership.  Moving away from the farm, Andrew has worked as a store manager and specialist agronomy/nutrition rep.


Andrew has numerous qualifications and brings this learning to the fore with his team and their farming clients, recommending best choices for individual farming needs.


  • Diploma in Agri Business
  • ITO Farm Approved Assessor
  • Dairy Production Systems Course
  • NZ Certificate in Agronomy with strands in Animal Health
  • NZ Certificate in Agrichemical


In his spare time and with his partner, day walks and overnight tramping are top of the list.  Farming for many years, like his partner, they love getting outside and enjoying the country. He also enjoys riding motorbikes and has recently taken up trials riding.  His other passion is music and plays bass Trombone in two brass bands and one jazz band.

Seales Winslow National Sales Manager
Terry Harding
Terence Harding

Leadership team

SealesWinslow Business Manager
Bryan Goldsack

Leadership Team

Merchant TSR - Northern
SealesWinslow team - shadow image
Kate McCallum

Sales Team

Kate worked as the Merchant Technical Sales Representative - Northern Region for Seales Winslow from 2014-17.  Kate has returned to the company in 2020 to resume this role after having a 3-year hiatus working in the car industry. 
Having owned a dairy farming business for 20 years, Kate has had plenty of experience in the cow shed and rearing calves. Kate is very passionate about rearing great heifers, as they are the future of the dairy industry. 
Kate works with merchant stores from Kaitaia in the north, to Taumarunui in the south, and all the way east to Opotiki.


Nutrition & Quality Specialist
SealesWinslow team - Penny
Penny Lavender

Nutrition Team

Penny joined SealesWinslow early in 2020 as our Nutrition & Quality specialist, based in the South Island.

Penny brings extensive experience to this role, dairy farming for 16 years, managing a vet clinic for 6 years, and another 6 years in nutrition for dairy, deer, sheep and beef. 

Her experience is backed up with qualifications: NZ Certificate in Animal Technology & NZ Certificate in Animal Care, Dairy Production Systems Course, and a Milk Map Course.

Penny is excited to use her experience and knowledge advising our TSR’s and provide on farm solutions to optimise stock health and productivity.

In her spare time, you will find Penny tramping with an aim of completing all of the ‘Great Walks’ in NZ.  Escaping the pressures of a busy lifestyle to enjoy and explore our beautiful country with her partner and family. Spending time enjoying children and grandchildren is hugely important as is travelling around NZ on their road bike while taking in the sites.