The 29-year-old singer and his partner Kelsey Hardwick - who got engaged in 2016 - tied the knot on July 14 in a romantic ceremony in the grounds of Ridge Farm in Surrey, England, surrounded by their family and closest friends.
Speaking to OK! magazine, Tom said: "It was the best day of our lives!"
Kelsey added: "I've also always wanted to get married outside so it was perfect, and there was no time limit for how long the party could go on for. I was like, we cannot have our party stopping at 12am!"
However, Tom was a little disappointed that not all of his former band mates - who he had asked to be ushers - turned up to help celebrate his big day.
He explained: "It's weird, I emailed all the boys a few months ago and asked them to be ushers. As we've not all been together since 2014, I thought my wedding might have been a nice moment for it.
Siva and Nathan said they'd like to but they didn't know what they were doing at that time.
"Then it got closer and I needed their suit sizes. Siva said no and Nathan didn't reply. It is what it is. We all got on in the band, but I was closer to Max and Jay; it was usually us three who went out and got smashed on tour. I'm happy they were there."
Meanwhile, Tom previously said he'd love to go on a backpacking honeymoon.
He told BANG Showbiz: "I would like us to go backpacking for six weeks around the world. I think that would be really good. When I was travelling with the band we got to see some really amazing places but sometimes it was a bit in and out and I never got to see certain things in certain places. So I'd like us to go backpacking."
Read the full interview only in this week's OK! Magazine