The Bees have paid �23,000 for the 21-year-old, who scored seven times in the Nationwide Conference last season.

"He is a third striker for two places. He is a young, raw talent who is not yet the finished article and will need a lot of hard work," Allen told his club's website.

Hatch spent two seasons with Gravesend and will swap his job as a car cleaner to go full time at Underhill.

He becomes Allen's 11th signing of the close-season and the first to cost a fee.