I might go watch the St. Paddy’s parade tomorrow, if I feel like wading through the tourists & locals. Last year when I was in Japan, I went with a friend of mine to the parade at Omotesando. That one wasn’t bad but I’m sure the one in London captures the spirit of St. Paddy’s more betta. 
Below is my favourite Irish toast. Gotta love them Irish, lol.
When we drink, we get drunk.
When we get drunk, we fall asleep.
When we fall asleep, we commit no sin.
When we commit no sin, we go to heaven.
So, let’s all get drunk, and go to heaven!
