I think all the GDS units will shift back to Dieppe. Who knows,
they may shut down the camp for good, the way Simpang Bedok has
urbanized over the years. Very little nearby land to train
anymore.
Nearest MRT is Tanah Merah; you can take bus No. 14 there (or from
Bedok Int). No. 10 starts from Tampines. The nearby bus terminal is
for No. 45, if I'm correct.