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We present results from NICMOS Hubble Space Telescope observations of thereddened bulge globular clusters NGC 6528, Terzan 5, Liller 1, UKS 1 and Terzan4, obtained through the filters F110W and F160W (nearly equivalent to J and H).For the first time the turnoff region of Liller 1 and the main sequence ofTerzan 5 and Terzan 4 are reached, as well as the horizontal branch of UKS 1.The magnitude difference between the turnoff and the red horizontal branch$\Delta m_{110}=m_{110}^{HB}- m_{110}^{TO}$ is used as an age indicator. Fromcomparisons with new isochrones in the NICMOS photometric system, we concludethat the two metal-rich clusters NGC 6528 and Terzan 5 are coeval withinuncertainties ($\sim 20%$) with 47 Tucanae. Liller 1 and UKS 1 are confirmed asmetal-rich globular clusters. Terzan 4 is confirmed as an interesting case of ametal-poor cluster in the bulge with a blue horizontal branch.Comment: 7 pages, 6 figures, accepted for publication in A&

HST NICMOS photometry of the reddened bulge globular clusters NGC 6528, Terzan 5, Liller 1, UKS 1 and Terzan 4