I've done it the last couple of years, first time with a mate whose wife kindly met us at the end where we got the camping stove out and made tea and a fry-up (plus a beer we'd stowed in the cool box

)
Last year was a solo effort where I pedalled up to Lowestoft to meet up with a night driver from my place of work, and got a lift back to within 12 miles of home.
137 miles, plus the ride home.
I might do it this year if the boss is happy to let me scrounge a lift back.
There's a company in south(?) London that will bring you and the bike back (coach and lorry), if you don't want to ride any more miles. Someone will remember the name, I'm sure..