Benjamin Bunch bap 12 Feb 1800 Binsted , Thomas & Mary Bunch.
I cannot spot any siblings for Benjamin. Have you found any?
Baptisms for any Thomas Bunch:
Thomas 28 Oct 1760 Binsted John & Deborah
Thomas 28 Jul 1780 Binsted George & Mary
Thomas 6 Mar 1781 Yateley William & Elizabeth
Thomas 21 Apr 1805 Yateley Thomas & Mary Ann ( also at Yateley to this couple William 1807 , Mary Ann 1809, Sarah 1811 , Elizabeth 1812)
It is reasonable to infer that Thomas 1805 Yateley is the son of Thomas 1781 Yateley. There is a Yateley marriage for Thomas Bunch and Mary Ann Giles 6 Dec 1804 which fits with the births.
The only marriage which seems to fit for Benjamin's parents is Thomas Bunch and Mary Lambole 2 Aug 1789 Binsted. If this is correct, Thomas , father of Benjamin , cannot be Thomas 1780 Binsted and may well be Thomas born 1760 to John and Deborah , earlier than you thought. If Benjamin was an only child his could have been a late birth to an older couple.
You may have other information that rules this out of course.