BT Additional Disc for use with existing BT Whole Home Wi-Fi (AC2600) only, App for complete control and 3 year warranty : Amazon.co.uk: Computers & Accessories
BT+Wi-Fi+Extender+Disc+for+BT+Smart+Hub+2+-+Black for sale online | eBay
How to boost your Wi-Fi throughout your home: Wi-Fi extenders explained
BT Whole Home Wi-Fi, Pack of 3 Discs, Mesh Wi-Fi for seamless, speedy (AC2600) connection, Wi-Fi everywhere in medium to large homes, App for complete control and 3 year warranty : Amazon.co.uk:
BT+083183+Wi-Fi+Extender+300+Kit+-+White for sale online | eBay