UC LGW 747 UC Power Outlet Plug Type

Hi,
First time poster so please be gentle!
I am flying LGW-LAS in UC and need to know what type of plugs work in the power outlets please. I will want to charge my iPad/iPhone.
After searching in vain on the website (the only airline I have found that has no info about this on their website), I emailed VA and they "helpfully" told me that I would need to buy a Kensington adaptor at the airport and gave me a whole ream of info about laptop voltages (which I did not enquire about). Now, Kensington is a brand not a type of plug so that was absolutely no help.
I have US/UK/EUR/Empower adaptors and just need to know which one to take. I thought it would be quicker/easier to ask the experts on here rather than get another non-answer from VA.
Thanks in advance!
First time poster so please be gentle!
I am flying LGW-LAS in UC and need to know what type of plugs work in the power outlets please. I will want to charge my iPad/iPhone.
After searching in vain on the website (the only airline I have found that has no info about this on their website), I emailed VA and they "helpfully" told me that I would need to buy a Kensington adaptor at the airport and gave me a whole ream of info about laptop voltages (which I did not enquire about). Now, Kensington is a brand not a type of plug so that was absolutely no help.
I have US/UK/EUR/Empower adaptors and just need to know which one to take. I thought it would be quicker/easier to ask the experts on here rather than get another non-answer from VA.
Thanks in advance!