You receive your rate after changing to GBP. You then go to book the car and it is at the point when you start putting your home address in and the rate changes!! Remembering that you have asked for the rate in GBP.... The format and rate of the car is automatically set to an address input of Ireland. Once you change and input your home address and in my case the UK, this is when the rate dramatically increases by nearly £300 and all because of the taxes!!! Their website needs sorting out and when you adjust from Euro to GBP at this point you should be able to add that you are from the UK as opposed to seeing a cheaper rate as if your residency is Ireland.