The BBC’s first football commentator, on radio beginning in 1927, was Henry Blythe Thornhill Wakelam, a former rugby player with Harlequins.
You can hear a snippet of his commentary, from an Everton game of the early ’30s, here, including references relating to the original Radio Times grid system.
The link to the recording is highlighted in yellow at the top right hand of the page. There isn’t enough of it, and it’s spoiled by BBC Breakfast’s (?) priggish comments about Harry Enfield. I think it sounds very contemporary. How does it strike you?