
EXPERT BID WRITING CONSULTANCY - UK AND GLOBAL
End-to-end tender writing, compliance and bid management for UK & international businesses, built to boost your success and reduce stress.
​Welcome to The Sidylle Group Ltd., a specialist bid writing consultancy, delivering expert proposal management and tender writing support across the UK and internationally.​
With over 20 years of experience, we help businesses of all sizes—from start-ups to multinationals, secure major contracts in both the public and private sectors. Whether you're new to tender writing or managing complex, multi-million-pound frameworks, we offer tailored bid support services to help you win.
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• 95%+ win influence rate on supported bids
• APMP-trained bid professionals
• Clients UK-wide & international​


WHY WORK WITH US
We’re proud of our 95%+ bid win rate, achieved through a combination of strategic insight, APMP-certified expertise and an obsession with excellence. Every bid we write is custom-built to match the requirements of the contracting authority, with persuasive, compliant and high-impact responses. Our UK-wide and international clients rely on us not just to write—but to win.
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• 95%+ bid win rate
• Clear pricing scope & timelines
• Expert bid professionals (APMP standards)
• Fast turnaround when you need it
• Trusted by SMEs to enterprise

“We won a £2m framework after a 48-hr turnaround with The Sidylle Group — strategic clarity made all the difference.”
— Senior Procurement Lead
Domiciliary Care
"The Sidylle Group helped us secure a £15M contract on our first try and we couldn't be happier."
— Bid Manager, UK Construction Firm

SECTORS WE SUPPORT
From healthcare, construction and social care to technology, education, energy and facilities management, we have supported winning bids worth up to £500 million, with a combined bid value in the billions of pounds.
No matter your sector or bidding experience, we bring structure, clarity and confidence to every submission.
Whether you’re bidding locally in Scotland or targeting opportunities across the UK or internationally, we offer flexible, reliable and results-driven bid support services wherever you are.
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We make complex bidding simple and successful.


Let’s Win Your Next Bid Together
Looking for a bid writing consultancy that delivers results? Partner with The Sidylle Group Ltd. and increase your chances of tender success. Contact us today to discuss your upcoming bid or tender opportunity.








