The following CD/DVD's are available from the North West Kent FHS......
CD-OR138 Woolwich St Mary Magdalene Registers 1670-1799 £8.00
CD-OR139 St Mary Magdalene Baptisms 1800-1857 £8.00
CD-OR140 St Mary Magdalene Baptisms 1857-1905 £8.00
CD-OR141 St Mary Magdalene Baptisms 1905-88 & other misc. Baptisms 1873-1959 £8.00
CD-OR142 St Mary Magdalene Burials 1680-94 & 1800-89 £8.00
CD-OR143 St Mary Magdalene Marriages 1754-1864 £8.00
CD-OR144 St Mary Magdalene Marriages 1864-1964 £8.00
CD-OR138/44 St Mary Magdalene Set of 7 above £30.00
DVD-OR32 St Mary Magdalene DVD Version £30.00
You can get these either direct from the NWKFHS at
www.nwkfhs.org.uk or via GenFair or The Parish Chest at similar prices (the latter two would be easier if paying by credit card from abroad).
Incidentally, Bell Watergate still exists - it's a small lane running down to the river, not far from where the Woolwich Ferry terminal is now. You can find it on Google Maps. There aren't any dwellings there now.
P.S. I've done a quick scan of baptisms in St Mary, Magdelene between 1773 and 1775, and can find no references to ANGUS.