Exhibit 12.1

CERTIFICATIONS FILED PURSUANT

TO 17 CFR

240. 13(A)

- 14(A)

I, James E Staley, certify that:

1. I have reviewed

this annual report on

Form 20

-F

of Barclays PLC;

2. Based on my knowledge,

this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make

the statements made, in light of the circumstances under

which such statements

were made, not misleading with respect to the period

covered

this report;

3. Based on my knowledge,

the financial

statements, and other financial information

included in this report, fairly present in all material respects the

financial condition, results of operations and cash flows

of the company as of, and for,

the periods presented in this report;

4. The company’s other certifying officer

and I are responsible for establishing and maintaining disclosure controls

and procedures

(as defined in

Exchange Act Rules 13a

-15(e)

and 15d-15(e)) and internal control over

financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-

15(f)) for the company

and have:

(a) Designed such disclosure controls and procedures,

or caused such disclosure controls and procedures to be designed

under our supervision, to

ensure that material information relating to

the company,

including its consolidated subsidiaries, is made known to us by others within those

entities, particularly during

the period in which this report is being prepared;

(b) Designed such internal control over

financial reporting, or caused such internal control

over financial reporting to be designed under our

supervision, to provide

reasonable assurance regarding

the reliability

of financial reporting

and the preparation

of financial statements

for external

purposes in accordance

with generally accepted accounting principles;

the company’s disclosure controls and procedures

and presented in this report our conclusions about the

effectiveness of the disclosure controls and procedures,

as of the

end of the period

covered

by this report based on such evaluation; and

(d) Disclosed in this report

any change in the company’s internal control

over financial reporting

that occurred during the period

covered by the

annual report

that has materially affected, or is reasonably likely to materially affect, the company’s

internal control over

financial reporting; and

5. The company’s other

certifying officer and I have disclosed, based on

our most recen

evaluation of internal control over

financial reporting, to

the company’s auditors and the audit committee of

the company’s boards

of directors (or persons

performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or

operation of internal control

over financial reporting

which are reasonably

likely to adversely affect

the company’s ability to record,

process, summarize and report

financial information; and

(b) Any

fraud, whether or

not material, that

involves management or

other employees who

have a significant role in the company’s internal control

over financial reporting.

Date: February

13, 2020

/s/ James E Staley

James E Staley

Title: Group

Chief Executive

Barclays PLC

I, Tushar Morzaria, certify that:

1. I have reviewed

this annual report on

Form 20

-F

of Barclays PLC;

2. Based on my knowledge,

this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make

the statements made, in light of the circumstances under

which such statements

were made, not misleading with respect to the period

covered

this report;

3. Based on my knowledge,

the financial

statements, and other financial information

included in this report, fairly present in all material respects the

financial condition, results of operations and cash flows of the company

as of, and for, the periods pr

esented in this report;

4. The company’s other certifying officer

and I are responsible for establishing and maintaining disclosure controls

and procedures

(as defined in

Exchange Act Rules 13a

-15(e)

and 15d-15(e)) and internal control over

financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-

15(f)) for the company

and have:

(a) Designed such disclosure controls and procedures,

or caused such disclosure controls and procedures to be designed under

our supervision, to

ensure that material information relating to

the company,

including its consolidated subsidiaries, is made known to us by others within those

entities, particularly during

the period in which this report is being prepared;

(b) Designed such internal control over

financial reporting, or caused such internal control over

financial reporting to be designed under our

supervision, to provide

reasonable assurance regarding

the reliability

of financial reporting

and the preparation

of financial statements

for external

purposes in accordance

with generally accepted accounting principles;

the company’s disclosure controls and procedures

and presented in this report our conclusions about the

effectiveness of the disclosure controls and procedures,

as of the

end of the period

covered

by this report based on such evaluation; and

(d) Disclosed in this report

any change in the company’s internal control

over financial reporting

that occurred during the period covered by the

annual report

that has materially affected, or is reasonably likely to materially affect, the company’s

internal control over

financial reporting; and

5. The company’s other

certifying officer and I have disclosed, based on

our most recent evaluation of internal control over

financial reporting, to

the company’s auditors and the audit committee of

the company’s boards

of directors (or persons

performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or

operation of internal control

over financial reporting

which are reasonably

likely to adversely affect

the company’s ability to record,

process, summarize and report

financial information; and

(b) Any

fraud, whether or

not material, that

involves management or

other employees who

have a significant role in the company’s internal control

over financial reporting.

Date: February

13, 2020

/s/ Tushar Morzaria

Tushar Morzaria

Title: Group

Finance Director

Barclays PLC