Hamilton was knocked into the air, and was forced to retire shortly afterwards, after a collision with Alonso on the first lap at Spa.
Alonso reacted angrily, and Hamilton bit back, but also took the blame.
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Asked by Sky if he gave Alonso enough room, Hamilton admitted: “No. looking back at the footage he was in my blind spot.
“I didn’t give him space.
“It was my fault today.
“It was my fault, I couldn’t see him, he was in my blind spot.”
The Belgian Grand Prix is the first race of the season that Hamilton failed a finish, bringing an end to a stellar 100 percent record.