I have the BT Whole Wi-Fi 2 disc kit and it delivers full M200 speed all over the house.
Unlike other mesh kits the BT kit does not have a combined router so you must set the hub3 in router mode but dont forget to disbale both bands Wi-Fi on the hub3.
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M200 Oomph - 5GB SIM + 3 extra SIM family plan - BT whole Wi-Fi - Sky Q
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Don't cry over Virgin price increase instead speak to retentions team and negotiate a better deal.