Contact our Estates Service Desk run by Cluttons.
0800 084 3454
Monday - Friday 9:00am - 5:00pm
Cornerstone Estates, c/o Cluttons LLP, First Floor,
Imperium Building, Imperial Way, Reading, RG2 0TD
Whenever you contact us, please make sure you always quote:
For outside of office hours, or if you are unable to reach our Cornerstone Estates team during the day, please call the Mitie Management Centre which is open 24 hours a day, 7 days a week, remembering to quote your unique Cornerstone Cell Site reference and site address.
0800 084 3454
To report site issue click here: Report Site Issues
At Cornerstone it is important to us to respond to issues and incidents promptly and efficiently in relation to our sites and your property. Cornerstone has a 24hr service desk which you can call, should you have an issue regarding the telecoms equipment.
On calling either of these numbers, you will be put through to our partnering service Mitie. Please provide the operator as much detail as possible.
Cornerstone operate a business continuity management system that is compliant to ISO22301 and assessed by BSI. If a major event or issue is raised, Cornerstone will inform its Incident Management Team led by our Chief Financial Officer, to bring the situation under control and back to a satisfactory state.
We’d like to remind our landlords that if you are a VAT registered company and you have elected the site for VAT, it is important to comply with your HMRC legal obligations by sending us a VAT invoice quoting your registration number, in support of your rent payment. Without a valid VAT invoice, we are unable to pay you the related VAT that is due.
If you want to contact Cornerstone directly out Head Office address is:
Hive 2, 1530 Arlington Business Park, Theale, Berkshire. RG7 4SA.