Better facilities for active sports encourage more users, increasing the amount of exercise that people get and thus reducing the burden upon health services (since fewer people will then go on to develop type 2 diabetes or heart problems).
£16m is a drop in the ocean these days. To put it into perspective, a new secondary school in Peterborough (The Thomas Deacon Academy) recently cost about £50m to build.
Services and leisure budget is completely separate from health budgets. If they didn't update the leisure centre you can bet it would just be returned to central government for use building or updating one elsewhere.
The leisure centre suits your needs so shouldn't have any further investment. Well, let's just invest where it meets your agenda then shall we?
As has been said £16 million is a trivial sum when looking at the NHS budget. It is a good amount to invest in leisure facilities that will hopefully appeal to the big and lazy youngsters......and the not so young!
An active and healthy life style with regular exercise and a balanced diet could save the NHS vast sums of money in the long term.