The public sector employment figures on page 13 of this report are pretty telling: https://www.ifs.org.uk/bns/bn145.pdf
1991-1997: NHS headcount static at 1.2M under Tories
1997-2010: NHS headcount grows to 1.6M under Labour
2010-2013: NHS headcount begins falling under Tories
Headcount is generally not a good metric to measure productivity or effectiveness as it's a number that politicians love to manipulate to for their respective ideologies (social welfare expansion for the left and budget restriction for the right).
Figures I found for 1997 and 2007 are similar, showing proportions of clinical staff at 49% and 51% respectively. http://content.digital.nhs.uk/catalogue/PUB00829/nhs-staf-19...
And medical school intake has risen from 3,749 in 1997/98 to 6,262 in 2012/13 - a rise of 67.0 per cent. http://www.nhsconfed.org/resources/key-statistics-on-the-nhs
It's still not enough - Britain spends maybe 2% GDP less on healthcare than other rich European countries. But at the end of Labour's time in power, there were 1/3rd more doctors and nurses employed by the NHS. The funding increase helped enormously.
Edit. But yes, the massive IT projects in the NHS were a hugely wasteful like all massive government IT projects. The approach of the Government Digital Service seems to be a huge improvement.
Building lots of infrastructure under Public-Private-Partnerships - built up massive bills - brought in under the Conservatives, massively expanded under New Labour.
The internal market, a new Labour innovation, brought in massive inefficiencies, and private profits along the way.
The current government is battering a massively weakened system.
But Labour significantly increased spending on the NHS, from 5% to 7% of GDP before the banking crisis (which with GDP falling saw spending rise in GDP terms by about another 1%.)
Since the Tories regained power they've been cutting back on NHS spending (and more dramatically on social care, which increases the demands on the NHS.) That's why we're seeing the horror stories once again of waiting lists and winter crises, which had last been common under the previous Tory administration in the early 1990's.
http://www.publicfinance.co.uk/opinion/2015/10/nhs-spending-...