SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans	12 Months Ended
Dec. 31, 2019 £ / shares
Save-as-you-earn [Member]
SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans [Line Items]
Weighted average risk-free interest rate	0.36%
Weighted average expected life	3 years 73 days
Weighted average expected volatility	20.00%
Weighted average expected dividend yield	4.00%
Weighted average share price (in Pounds per share)	£ 0.53
Weighted average exercise price (in Pounds per share)	£ 0.40
Executive share plan 2003 [Member]
SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans [Line Items]
Weighted average risk-free interest rate	0.62%
Weighted average expected life	1 year 109 days
Weighted average expected volatility	23.00%
Weighted average expected dividend yield	4.00%
Weighted average share price (in Pounds per share)	£ 0.62
Weighted average exercise price (in Pounds per share)
LTIP [Member]
SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans [Line Items]
Weighted average risk-free interest rate	0.83%
Weighted average expected life	3 years 255 days
Weighted average expected volatility	27.00%
Weighted average expected dividend yield	4.00%
Weighted average share price (in Pounds per share)	£ 0.63
Weighted average exercise price (in Pounds per share)
CFO Buyout [Member]
SHARE-BASED PAYMENTS (Details) - Schedule of Assumptions Used for Calculating Benefit Plans [Line Items]
Weighted average risk-free interest rate	0.64%
Weighted average expected life	1 year 146 days
Weighted average expected volatility	19.00%
Weighted average expected dividend yield	4.00%
Weighted average share price (in Pounds per share)	£ 0.58
Weighted average exercise price (in Pounds per share)

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2019-01-01
-Paragraph 47
-Subparagraph a
-Clause i
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-URIDate 2019-03-27

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The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

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The weighted average exercise price of share options granted in a share-based payment arrangement. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2019-01-01
-Paragraph 45
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_b_ii&doctype=Standard
-URIDate 2019-03-27

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The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

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