Whistl, the UK’s leading logistics specialists in e-fulfilment, mail and parcels, has climbed into ninth place in the annual Thames Valley 250 listing.
Compiled by The Business Magazine, the Thames Valley 250 celebrates the region's top privately-owned businesses and ranks them by annual sales turnover.
Since its launch over 20 years ago, the Whistl Group has transformed from being the UK’s largest processer of business mail to offering parcel and fulfilment management services, alongside eCommerce marketing solutions. The Group operates from a number of depots and warehouses across Great Britain and Northern Ireland, working with customers on a global scale.
Headquartered in Marlow, Buckinghamshire, Whistl is ranked amongst a prestigious list of organisations, including Ocean Partners, the AA, and fellow logistics business, the Unipart Group.
What is the Thames Valley 250?
The Thames Valley 250 only features companies that are independent and headquartered in the Thames Valley region, predominantly comprising Buckinghamshire, Berkshire and Oxfordshire.
Cumulatively, the 250 companies included in the 2025 edition have an annual turnover of £33.5bn.
Those mentioned in the latest rankings create 144,000 jobs and contribute significantly to the area's economic output.
As part of its annual appraisal, The Business Magazine also hosts its own Thames Valley 250 awards ceremony. Categories include the Fast Riser Award, given for considerable year-on-year growth, as well as Leadership Team of the Year and a Climate and Sustainability Award.
Find out more about why businesses trust Whistl to provide them with reliable and cost-effective logistics and communication solutions, powered by expert support.
About Whistl
The Whistl Group is a £770m+ revenue delivery management company that provides mail, parcels, leaflet advertising, fulfilment and contact centre services in the UK and internationally.
Headquartered in Marlow, the Whistl Group of companies operates across the UK, handling in excess of 3.6bn items a year.
For media enquiries, please contact:
Paul Donlon: 020 3355 0959 or email pdonlon@owlms.com.
Updated: May 2025
We are proud to have moved into ninth position in this year’s Thames Valley 250. Although we are headquartered in Marlow, our success is due to the great team that we have working in the company across the whole of Great Britain and Northern Ireland.
Nick Wells, Executive Chairman, Whistl
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