I've shot at the H&H grounds with instructor Nathan Dudley. Its about 45 minutes on the tube to Northwood and then a short cab ride from the station there to the facility. Its a fantastic place and Nathan is a very nice guy and good instructor.

While in London, H&H stored my guns and even transported them to their grounds for me.

They really made it easy for me.

Hope this helps and enjoy your time in the UK.