Priority Pass access with guests and pre-booking

[Kyo]

I have recently signed up to Priority Pass via HSBC. If I were to bring guests to a lounge that requires pre-booking (No 1 Lounge in Heathrow T3 requires £6/person to reserve a place in the lounge at a specific time), how much would the guest need to pay to get access? The No 1 Lounge website mentions £38, but am I correct that each guest would pay £44 in total (price to enter + price of booking a place)? Thanks.

[The real Swiss Tony]

I believe you would pay the pre-book £6 plus whatever the card issuer charges for a guest beyond your allocation, which I guess is in the region of £15-£20.

[t0m]

Yes, on my HSBC Priority Pass it’s £24 per guest, so would be £30 total. Decided it wasn’t worth it for kids access to we spent the money on breakfast at Heathrow instead!