im a greencard holder here in the US, im planning to go visit UK for 2 weeks and my friend can give me a invitation letter, she sent me the letter two weeks ago, however up to now, i havent received it, so i told her to just type it in the computer, print it out, and sign it and then scan it and send it to me thru email. im just wondering if this will be applicable? or do the UK embassy requires letter of invitation to be hand written?