Based on the available data, healthcare expenditure on immunisation programmes in the UK as a percentage of GDP is projected to remain constant at 0.04% for the years 2024 through 2028. This indicates a 0% year-on-year variation and a 0% CAGR over the forecasted five-year period.
Future trends to watch include potential policy changes or public health initiatives that could impact expenditure levels. Additionally, developments in vaccine technology and emerging infectious diseases may influence future budget allocations.