Responsible for leading the Cellnex UK business, our management team is committed to developing collaborative partnerships with customers, portfolio partners and stakeholders across the industry – driving innovation and growth, and creating value for all in today’s connected world.
Following the acquisition of Arqiva Services Limited by Cellnex UK, “On Tower UK Limited” is born to integrate into the current structure of Cellnex UK. Having said that, we are now in a transition period and this page will be updated as and when we integrate.
Bringing experience and innovation together. The story so far…

On Tower UK Limited, a Cellnex Company.
David Crawford
Managing Director


Alfonso Alvarez
Deputy Managing Director
Alfonso has played an active role in the international expansion of Cellnex and will focus on organic growth, business diversification and exchange of best practices. Alfonso continues to lead his current Cellnex UK team until we integrate.
Carolina Cuartero
Deputy Managing Director, Shared Services
Carolina leads a centralised model of transversal services in the UK covering functions such as finance, human resources, IT, procurement and legal with the aim of creating added value to the organisation.


Paul Stonadge
Sales & Commercial Director
Paul leads the Sales and Commercial team which is focussed on developing strong relationships with our customers. Paul has over 23 years of experience across the UK mobile industry with a blend of both operational and commercial roles in both Mobile Operator and Infrastructure sectors. The team aim to provide rural and urban ‘neutral host’ asset sharing solutions as the UK’s 5G ecosystem evolves.
Jon Freeman
Customer & Infrastructure Programmes Director
Jonathan leads the UK delivery function which is accountable for customer installation and infrastructure upgrade activity; which strives to be the most admired and respected wireless delivery organisation in the UK. For the last 15 years he has held senior roles in finance, strategy and product disciplines across the telecoms, media and regulatory sectors.


Mark Bartlett
Estates & Infrastructure Director
Mark leads the Estates team which is focused on maintaining and improving our sites working in partnership with our Landlords. Mark has 15 years of telecoms experience in both the fixed and mobile industries having led significant operations as well as transformational projects.