What phone handset is compatible with sky. Also our router access is in a cupboard so not able to p

[noreen.e.mcdermot]

We are currently with BT and have BT handset.  So it won't be compatible with sky.  

[Mark39]

Any standard DECT wireless handset should be fine.

Edited to add: a standard DECT kit comes in two parts: a base station which plugs into the Hub, and a handset that you can place wherever it's convenient. There are also kits available with multiple handsets.