Pantheon Resources : Increase in Working Interest to 75% of the VOBM#5 Well

21 December, 2017

Pantheon Resources plc

Increase in working interest to 75% of the VOBM#5 well, Polk County

Pantheon Resources plc ("Pantheon" or the "Company"), the AIM-quoted oil and gas exploration and production company with a working interest in several conventional project areas in Tyler & Polk Counties, onshore East Texas is pleased to provide the following update:

VOBM#5 Well, Polk County, Increase in working interest from 58% to 75%

Pantheon is pleased to announce the acquisition of an additional 17% working interest in the upcoming VOBM#5 development well, and the surrounding 320 acre unit, in Polk County, East Texas. Upon completion of the acquisition Pantheon's working interest in the VOBM#5 well and unit will increase from 58% to 75%.

Purchase consideration for the additional 17% working interest will comprise an additional pro-rata 17% share of drilling and completion costs. No premium is being paid for this increased working interest.

VOBM#5 will be the first well of the 2018 campaign and will be a vertical well targeting the Eagle Ford sandstone and is considered by the operator to be a development well offsetting the VOBM#1 well. Spudding of the VOBM#5 well remains on track to occur by early January 2018; the drilling programme is fully funded from existing cash resources and anticipated production cashflow.

Jay Cheatham, CEO, said:

"This is a superb opportunity for Pantheon and the least expensive way to acquire potential reserves by drilling a development well and paying no back costs or promote. The location immediately west and south of the VOBM#1 production well offers the real possibility of exceeding a P50 well. The principal at Vision will have a 25% interest which is some 50% above his attributable interest when Kaiser Francis Oil Company was his 2/3 partner."

Further information:

Pantheon Resources plc Jay Cheatham, CEO

+44 20 7484 5361

Justin Hondris, Director, Finance and Corporate Development

Stifel Nicolaus Europe Limited (Nominated Adviser and broker) Callum Stewart

+44 20 7710 7600

Ashton Clanfield Nicholas Rhodes

FTI Consulting Ed Westropp James Styles

+44 20 3727 1000

For further information on Pantheon Resources plc, see the website at:www.pantheonresources.com.

The information contained within this RNS is considered to be inside information prior to its release. Neither the contents of the Company's website nor the contents of any website accessible from hyperlinks on the Company's website