A standard non-fault call out charge of £99 will apply to move the Hub - you cant do it yourself - as your signal strengths will need resetting.
1Gb service is only available in certain postcodes - their website has a checker
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John
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My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.