In August 1914 only 41 60 pounders had been built and 13 of them were in Canada and India so the 7th and 8th divisions deployed to France in October 1914 without their 60pdr battery.
From Wiki:
"......in 1902 the Heavy Battery Committee was formed comprising officers experienced with heavy and siege artillery in South Africa and presided over by Colonel Perrott who had commanded the Siege Train there. In early 1903 their first report dismissed the 4.7 inch (120 mm, used in South Africa) and the 30 pounder (used in India) from further consideration because they lacked firepower........
..........in 1905 the design for the BL 60 pounder was accepted.........
.........Unfortunately, in 1900 the Secretary of State for War had announced a plan to give "Volunteer Position Batteries 4.7 inch guns", he also extolled the merits of 4.7, (which the army knew to be misleading) and in 1902 and 1903 Parliament voted to equip 60 Volunteer batteries with a 4.7 inch, despite the 60 pounder being in development. The 4.7 inch had many weaknesses as a field equipment, but it had captured the public's imagination. However, in 1903 a heavy brigade RGA was formed by converting three siege companies and equipping them with 4.7 inch guns. The following year a second brigade was formed from three more RGA companies. These regular army brigades were part of the corps artillery, although their equipment was an expedient. .........."
This would be a good incident to avoid, if it was avoided then the 60 pounder would have been far more prevalent in the British Army.