Leyshon Resources Limited (LRL) Upgraded Resource Estimate

Leyshon Resources Limited (“Leyshon”) (AIM & ASX: LRL) is pleased to report a substantially
upgraded resource estimate for the Zheng Guang gold zinc project in Northeast China which
allow’s the Company to rapidly progress the development of the project.

Independent resource specialists Hellman and Schofield Pty Ltd (H&S) of Australia has reported
a revised resource estimate incorporating the 43,500 metre 2007 drill programme. Resources
were estimated by Multiple Indicator Kriging including block support correction to give tonnage
and grade estimates at open pit mining selectivity, and are reported below at gold equivalent
cut-off grades.

The March 2007 resource estimate was reported at gold cut-off grades. Taking into account the
different basis of cut-off grades used to report the 2007 estimates, the current estimate at a 0.5
g/t gold equivalent cut-off grade has:

· increased the overall resource by approximately 25% from 24 to 30 million tonnes,
· increased the Measured and Indicated resources by approximately 60% from 10 to 16
million tonnes,
· slightly decreased contained gold by approximately 4% from 1.2 to 1.16 million ounces,
· increased contained silver by approximately 20% from 3.7 to 4.5 million ounces, and
· increased zinc content by approximately 30% from 94,000 to 120,000 tonnes.

Gold equivalent cut-offs were used to allow the value of zinc and silver to be taken into account
as part of the estimation process. This was based on 1% Zn and 1g/t Ag being equivalent to
0.67 g/t Au and 0.018g/t Au respectively. These ratios were calculated at a gold price of
$930/oz and metallurgical recovery of 87.3%, and silver price of $US17/oz and metallurgical
recovery of 84%, and zinc price of US$2250/tonne and recovery of 84% with payments at
47.5% of recovered zinc metal to allow for smelting, refining and transport charges.

The principal objective of the 2007 diamond drilling campaign was to increase confidence in
resource estimates for the Main Mineralised Zone to allow detailed mine design studies to
undertaken before mine development. This was achieved with estimates for portions of the
Main Mineralised Zone upgraded to Measured and Indicated status.
The 2007 drilling programme also reinforced the project’s exploration potential. Mineralisation in
the main zone was traced for an additional 50 metres to the north and the mineralised trend
continues at depth. Encouraging early results were encountered at Zheng Guang North, South,
East and West.

The Company is in the final stages of approvals ahead of the commencement of development in
the project in the next few weeks. Full details of the progress being made will be provided in the
Quarterly Report to be released by 30 April.

Managing Director Paul Atherley commented:
“The Company’s strategy strategy is to rapidly delineate the Main Ore Zone as a mineable
resource, get into production and use the cashflows to aggressively explore this highly
mineralised and under explored gold and copper belt.
This successful upgrade of the Main Ore Zone to Measured and Indicated status allows us
to progress the development