+44 (0) 1542 841245 Opening Hours: Mon to Fri 08:30 – 17:00 customerservices@poseidonnavigation.com

The Team

Thomas Gunn
Managing Director

Tom has many titles, he is our Managing Director, Compass Adjuster & Company Owner. With his entire life dedicated to the industry, the short version is that he started as a Compass Adjuster at the age of 21 and he triumphantly went on to establish Thomas Gunn Navigation Services Ltd, we are grateful to have a humble mentor at the helm of the company. The 36 years of experience he had at TGNS has set PNS Ltd in good stead for the future. Tom’s leadership, total commitment and loyalty to all the staff employed within the organisation means that the service provided to all the customers around the world goes unrivalled.  Tom is one of many fitness fanatic’s within the team, arguably the most adventurous. His list of hobbies is almost as impressive as his resume.

Cherie Timney-Gunn
Company Secretary

Cherie is a Director and the Company Secretary. If we had to sum up her role here in one word we’d say Mum! Cherie manages to keep the Poseidon crew in order and with her background in the Women’s Royal Air Force she makes it look easy, fine skills learnt to deal with this team on a daily basis! Just kidding we are a delightful bunch, except maybe one or two cheeky chaps, can you guess who?

Hermann Assanvo
Finance & Operations Director

Hermann is our Finance & Operations Director. There’s no task too big or a challenge that he will say no to. There’s not much he can’t do, a hard worker to say the least. Hermann makes time for each member of the team and his positive attitude is an asset to him, the man really has no weaknesses. Actually on second thought, come to think of it, he does have one Achilles heel… Haribo!

Claire Nicol
Sales Executive

Claire is the Sales Executive of PNS Ltd, she’s often travelling promoting our Outfit Management Services or on the Bridge of a vessel installing Challenger & getting to know our customers, one of the perks of the job, we think. With her background in the Fleet Management department and her involvement in the Chart and Nautical Instrument Trade Association we are pleased Claire is in this customer facing role, friendly with a sense of humour she gets on well with everyone!

Karen Leal
Head of Fleet Management

Karen wins the award for longest standing employee to Thomas Gunn, she has been by Tom’s side for 30 years! As Head of Fleet Management it’s fair to say she brings a lot of knowledge and experience to the table. When the office lights turn out at 5o’clock Friday, Karen tells us she loves nothing more than heading home to her lovely family but most importantly with a bottle of wine in hand, after all it’s well deserved after a week with us lot!

Kristina Hmelauskaite
Fleet Manager

Kristina is one of our Fleet Managers. She is highly organised and loves a challenge which makes her a great asset to the team! She can speak three languages and has an interest to learn a further two, originally from Latvia, she likes to give the team a giggle with her pronunciation of some of the Scottish towns. Kristina doesn’t mind getting her hands dirty on the weekends under the hood of the car, she’s been seen sporting a few vehicles to the office. Fun fact – she’s a talented artist, so much so some of her work has been bought!

Christopher Singer
Senior Fleet Manager

As our Senior Fleet Manager, Chris shows great customers services skill and bring some masculinity to the department. He fits in nicely with our gang of girls… although when we asked him to tell us what he gets up to on the weekend he replied saying he spends his Friday nights painting his daughter’s nails, well Chris no wonder you fit in so well. Chris has an extensive background in Sales, when he isn't busy seeing to our customers needs, you may find him on the road visiting new clients. 

Madi Assanvo
Credit Controller & Treasurer

Madi is our Credit Controller and Treasurer, the department is fast paced however we believe her biggest task is being married to Hermann. Behind every strong man is an even stronger woman, right? Efficient and organised, Madi could compete in a financial race with a robot and she’d still finish first! One of her favourite past times is cooking, if she ever invites you round for dinner, say yes, you’ll be in for a treat!

Ellie Thomas-Gunn
General Assistant

Ellie is our General Assistant here at Poseidon, she provides support to the whole team… God Bless you Ellie!  As Tom & Cherie’s daughter you’d think she would be the Princess of Poseidon but no, in fact Ellie is the Rock Chick of the office and she’ll dance with anyone to a good rock ballad, except Mum or Dad!

Jerome Maguire
Apprentice Compass Adjuster

Jerome is our very own Irish GI Joe, if he’s not kayaking, fishing, shooting or horse riding he’ll be in our warehouse organising the orders and getting ready to deliver them to our local customers. So, if you see this man in the blue Poseidon van give him a wave! Jerome has recently started his apprenticeship to become a qualified Compass Adjuster, working under the guidance of Thomas Gunn.

Catrin Griffith
Accounts Assistant

Catrin joined the team in late 2021 and has merged nicely into the Accounts department. When she’s not giggling away in the corner of the office you’ll find her in the great outdoors. She enjoys farming, permaculture and foraging, plus her array of pets keep her busy she has cats, dogs, sheep, chickens, turkeys and even a peafowl.  

Bereketab Gulai
Software Developer

Bereketab or Biruk for short, is a positive and friendly member of our team, and most importantly remains calm while under pressure (probably a good thing with the digitalization of the industry). Originally from Eritrea but now resides in Scotland, Biruk graduated from Glasgow Caledonian University. While he's not in the office you'll find him in the swimming pool, playing the piano or on the football pitch.

Nusrat Chowdhury
Software Developer

Nusrat is one of our Software Developers, she completed MSc in Information Technology with Business Intelligence from Robert Gordon University.  Aberdeen is her second home since she originally came from Bangladesh.  Her hobbies include, travelling and adventure and spending time with friends. Activity wise another team member who you'll find swimming, playing badminton or going for long walks.


Herry Ganeshwala
Software Developer

Herry, a software developer by trade, is really good at developing code that can do amazing things. He's a pro at solving tricky puzzles and finding answers to tough problems. In his free time, he enjoys playing cricket, traveling to new places, cooking authentic Indian food and watching interesting movies.

Naresh Ramisetty
Software Developer

Naresh is another one of our software developers. When he's not immersed in lines of code, you can find him on the cricket pitch. Naresh is not just a tech enthusiast, he's a very happy individual who radiates positivity. Originally hailing from the vibrant land of India, he now calls Swansea, his home. Weekends for Naresh are all about the sports grounds, where he gathers with friends and they share their love for Cricket.