I've checked a stroller numerous times when traveling with our kids but I was going to ask someone to bring one over to the UK for me. They will be traveling without kids and it isn't worth it if they get hit with a $200 oversized bag fee.
According to Amazon, the dimensions are 31" x 24" x 9.75" when , but collapsed which would put it over the 62 linear inches but since strollers are relatively common i didn't know if they would treat it as oversized or not.
http://ecx.images-amazon.com/images/I/613lzKPWyiL.jpg