This tree looks in many ways like a sycamore but has dark-green leathery-looking leaves on crimson stems. Could be the Norway Maple cultivar 'Crimson King'.
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Lat/Lng: 53.3873, -2.9248
OS grid ref: SJ385882
Park in suburban district of Liverpool. Former grounds of Rathbone family home, sold to council in 1897. Mix of wooded areas, walled garden, lawns and lake.