Amatis Networks Ltd

Amatis Networks is a full service ISP with a UK wide IPv6 MPLS enabled network and two owned and managed data centres in Newbury and Reading Berkshire.
Amatis offer a full range of hosting options as well as a complete range of connectivity and Cloud options.
Hosting in our own data centres can be from a server to a rack to a suite.
Connectivity to our own MPLS enabled network ranges from xdsl through EFM to Fibre Ethernet.
Cloud solutions, virtual data centres, on line storage, and data backup.

amatis also have a suite in Equinix Slough

https://www.datacentermap.com/united-kingdom/slough/equinix-ld5-slough_tenants.html