Real Effects of Uncertainty: Evidence from Brexit, Accessible Data

Figure 1. U.K. Economic and Political Uncertainty

Monthly, 2013 = 100

Period U.K. EPU
1/1/2013 167.041
2/1/2013 119.4612
3/1/2013 123.5237
4/1/2013 108.1274
5/1/2013 73.27667
6/1/2013 97.46981
7/1/2013 63.76774
8/1/2013 97.80031
9/1/2013 81.45824
10/1/2013 103.1889
11/1/2013 79.3492
12/1/2013 85.53591
1/1/2014 92.82644
2/1/2014 81.81801
3/1/2014 97.62725
4/1/2014 51.61635
5/1/2014 89.36116
6/1/2014 55.65398
7/1/2014 65.74924
8/1/2014 94.38499
9/1/2014 120.3074
10/1/2014 71.86657
11/1/2014 63.97959
12/1/2014 94.58585
1/1/2015 90.46281
2/1/2015 85.49338
3/1/2015 94.22099
4/1/2015 114.8756
5/1/2015 122.5101
6/1/2015 89.82938
7/1/2015 80.54738
8/1/2015 61.82569
9/1/2015 125.827
10/1/2015 69.96554
11/1/2015 93.6961
12/1/2015 73.93171
1/1/2016 112.1463
2/1/2016 140.5562
3/1/2016 215.5224
4/1/2016 195.4161
5/1/2016 192.6734
6/1/2016 359.6795
7/1/2016 513.3928
8/1/2016 206.2413
9/1/2016 170.4007
10/1/2016 245.1036
11/1/2016 366.9942
12/1/2016 210.4394
1/1/2017 242.455
2/1/2017 200.5262
3/1/2017 188.2433
4/1/2017 150.8421
5/1/2017 211.448
6/1/2017 319.1266
7/1/2017 209.744
8/1/2017 198.5051
9/1/2017 205.8802
10/1/2017 218.4548
11/1/2017 233.814
12/1/2017 188.4422
1/1/2018 178.0059
2/1/2018 92.59314
3/1/2018 174.8755
4/1/2018 130.0465
5/1/2018 159.6458
6/1/2018 167.1372
7/1/2018 167.2842
8/1/2018 136.0428
9/1/2018 164.1016
10/1/2018 202.9605
11/1/2018 202.8632
12/1/2018 210.7655
1/1/2019 182.9604
2/1/2019 207.0056
3/1/2019 187.9398
4/1/2019 157.8115
5/1/2019 180.1014
6/1/2019 159.5495

Note: The Brexit referendum is marked at mid-2016 with a dotted line.

Source: Authors' calculations based on Baker, Bloom, and Davis (2016), accessed via www.policyuncertainty.com.

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Figure 2. U.K. Real GDP Compared to Other G7
Figure 2a: Real GDP Growth Rates

4−quarter percent change

Period U.K. G7 Upper Bound G7 Lower Bound
2012 Q1 1.243948 2.883174 -2.3447869
2012 Q2 1.06359 2.814677 -3.21604379
2012 Q3 1.975796 2.528125 -3.29148301
2012 Q4 1.630066 1.630066 -3.21024997
2013 Q1 1.631097 1.631097 -2.93555053
2013 Q2 2.25646 2.25646 -2.17320829
2013 Q3 1.983905 3.121603 -1.45394197
2013 Q4 2.683236 3.384447 -0.85705221
2014 Q1 2.697911 2.92991 0.10266385
2014 Q2 2.820205 2.972572 -0.15380894
2014 Q3 2.443546 3.119734 -0.89480633
2014 Q4 2.47249 2.876855 -0.35524194
2015 Q1 2.33791 3.978205 0.0130316
2015 Q2 2.396273 3.350027 0.54033354
2015 Q3 2.247674 2.441025 0.2193325
2015 Q4 2.438954 2.438954 -0.39486917
2016 Q1 2.071682 2.330853 0.16730083
2016 Q2 1.886858 2.276612 0.20012911
2016 Q3 1.907935 2.026305 0.48663916
2016 Q4 1.808987 2.034066 1.14633563
2017 Q1 2.225809 2.346824 1.36889897
2017 Q2 1.941748 3.980447 1.87311862
2017 Q3 1.8298 3.286158 1.69876594
2017 Q4 1.576479 3.383192 1.57647943
2018 Q1 1.054383 2.861873 0.9285354
2018 Q2 1.331875 3.202294 0.91715474
2018 Q3 1.580999 3.133538 -0.36110256
2018 Q4 1.3937 2.516496 -0.25646915
2019 Q1 1.98311 2.652241 0.07393794
2019 Q2 1.338882 2.27832 0.23889966

Note: The Brexit referendum is marked at mid-2016 with a dotted line and 2013Q3:2016Q2 U.K. average marked at 2.37 before the Brexit referendum and 2016Q3:2019Q2 U.K. average at 1.66 after the Brexit referendum.

Source: Authors' calculations based on data from national statistics agencies, accessed via Haver Analytics.

Figure 2b: U.K. Real GDP

2016Q2 = 100

Period Actual Implied by growth in other G7* Upper confidence limit Lower confidence limit
2016 Q1 99.47206      
2016 Q2 100 100 100 100
2016 Q3 100.4508 100.504 100.6097 100.3983
2016 Q4 101.1033 101.029 101.2423 100.816
2017 Q1 101.6861 101.8158 102.1631 101.4693
2017 Q2 101.9418 102.4383 102.9018 101.9763
2017 Q3 102.2888 103.2071 103.8047 102.6123
2017 Q4 102.6972 103.9841 104.7182 103.2543
2018 Q1 102.7547 104.4493 105.2965 103.6079
2018 Q2 103.3007 105.0729 106.0417 104.1119
2018 Q3 103.9446 105.5266 106.6109 104.4522
2018 Q4 104.276 105.9121 107.1141 104.7223
2019 Q1 104.8795 106.5148 107.84 105.2043
2019 Q2 104.6508 106.9566 108.4008 105.53

*Derived from regressing U.K. growth on export−weighted average growth in other G7 countries over 2000Q1:2016Q2. Gray shaded area is 95% confidence interval.

Note: The Brexit referendum is marked at mid-2016 with a dotted line

Source: Authors' calculations based on data from national statistics agencies, accessed via Haver Analytics.

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Figure 3. Slowdown in U.K. GDP and its Components
Figure 3a: Changes in Growth Rates since the Brexit Referendum*

Percentage point (a.r.)

  Changes in Growth Rates since the Brexit Referendum*
Private consumption -1.2534905
Business investment -5.4001663

*Change in average quarterly growth rates in 2016Q3:2019Q2 relative to 2013Q3:2016Q2.

Source: Authors' calculations based on data from the Office for National Statistics, accessed via Haver Analytics.

Figure 3b: Contribution to Change in GDP Growth*

Percentage point (a.r.)

  Contribution to Change in GDP Growth*
Private consumption -0.78691645
Business investment -0.49145661
Net exports 0.39982965
Other 0.04857552

*Contribution to change in GDP growth in 2016Q3:2019Q2 relative to 2013Q3:2016Q2.

Source: Authors' calculations based on data from the Office for National Statistics, accessed via Haver Analytics.

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Figure 4. Real Business Investment

2013Q1 = 100

Period U.K. Other G7*
2013 Q1 100 100
2013 Q2 102.6781 101.0363
2013 Q3 104.8581 101.9993
2013 Q4 104.6704 103.793
2014 Q1 106.3098 105.0622
2014 Q2 110.2142 106.1784
2014 Q3 109.8588 107.4326
2014 Q4 112.2666 108.0586
2015 Q1 116.7618 108.2143
2015 Q2 117.2674 108.2604
2015 Q3 116.7067 108.7396
2015 Q4 119.575 108.5519
2016 Q1 121.322 109.5417
2016 Q2 122.5259 109.6793
2016 Q3 124.5057 110.8365
2016 Q4 122.143 111.2205
2017 Q1 124.9187 112.8987
2017 Q2 126.3703 114.1281
2017 Q3 126.6532 115.2292
2017 Q4 126.9084 117.2124
2018 Q1 125.6145 118.5583
2018 Q2 124.8486 120.3171
2018 Q3 123.7999 120.6476
2018 Q4 122.5309 121.7824
2019 Q1 123.5471 123.1947
2019 Q2 123.0765 123.0114

*Constructed from trade weighted average real investment growth in other G7.

Note: The Brexit referendum (is) marked at mid-2016 with a dotted line

Source: Authors' calculations based on data from national statistics agencies, accessed via Haver Analytics.

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Figure 5. VAR Impulse Responses to an Increase in EPU
Quarters after the shock EPU FSI FTSE Exchange Rate CPI Real GDP
Lower bound Impulse Response Upper bound Lower bound Impulse Response Upper bound Lower bound Impulse Response Upper bound Lower bound Impulse Response Upper bound Lower bound Impulse Response Upper bound Lower bound Impulse Response Upper bound
0 18.3636 19.1895 20.3865 0.0151 0.0229 0.0346 -2.1462 -1.8495 -1.4019 -0.8212 -0.6949 -0.4901 -0.0765 -0.0587 -0.0288 -0.1622 -0.1384 -0.1024
1 17.0884 18.1214 20.3346 0.0055 0.0166 0.0294 -2.1878 -1.8278 -1.1684 -1.5996 -1.4063 -1.0909 -0.1053 -0.0803 -0.0308 -0.2199 -0.1774 -0.1121
2 13.4413 14.9468 17.4971 -0.0098 -0.0015 0.0132 -2.1006 -1.6175 -0.8366 -1.8847 -1.6509 -1.2461 -0.1128 -0.0796 -0.023 -0.3278 -0.2688 -0.176
3 10.1726 11.6065 14.3273 -0.0157 -0.0077 0.0068 -2.3015 -1.7919 -0.9083 -2.0812 -1.7937 -1.3456 -0.1128 -0.0729 -0.004 -0.4304 -0.3488 -0.2309
4 8.9812 10.2694 12.8594 -0.0182 -0.0111 0.0027 -2.5746 -2.0031 -1.0877 -2.1509 -1.8482 -1.354 -0.121 -0.0802 0.0011 -0.528 -0.4294 -0.2923
5 7.9424 9.1488 11.8107 -0.02 -0.0132 -0.0003 -2.8427 -2.1929 -1.24 -2.1657 -1.8733 -1.3543 -0.1408 -0.0885 0.0003 -0.6061 -0.5015 -0.3315
6 6.9895 8.313 10.9522 -0.0225 -0.0154 -0.0037 -3.0416 -2.3057 -1.3286 -2.2125 -1.8899 -1.32 -0.1576 -0.1042 -0.0015 -0.6776 -0.55 -0.3662
7 5.9914 7.419 10.1356 -0.0252 -0.0179 -0.0068 -3.1602 -2.3969 -1.3415 -2.2303 -1.8539 -1.29 -0.1823 -0.1184 -0.0049 -0.7504 -0.5913 -0.3838
8 5.1957 6.6465 9.401 -0.0283 -0.0205 -0.0097 -3.1801 -2.4455 -1.3326 -2.2387 -1.8215 -1.2267 -0.2094 -0.1337 -0.0094 -0.8017 -0.6279 -0.393
9 4.5204 5.9445 8.7347 -0.0311 -0.0221 -0.0118 -3.2253 -2.4615 -1.3016 -2.2669 -1.7837 -1.1547 -0.2322 -0.1473 -0.0174 -0.8496 -0.6612 -0.3965
10 3.9046 5.2337 8.2071 -0.0322 -0.0238 -0.0132 -3.2289 -2.4749 -1.2569 -2.2378 -1.7351 -1.0698 -0.2594 -0.1587 -0.022 -0.8738 -0.6795 -0.3941
11 3.3054 4.6465 7.6312 -0.033 -0.0249 -0.0139 -3.2658 -2.3945 -1.2026 -2.2002 -1.6789 -0.9885 -0.2818 -0.1746 -0.023 -0.8994 -0.6954 -0.3975
12 2.7558 4.1312 7.0994 -0.0332 -0.0258 -0.0144 -3.326 -2.3535 -1.1362 -2.1733 -1.6098 -0.9253 -0.3029 -0.1835 -0.0251 -0.9498 -0.7118 -0.3954
13 2.232 3.7218 6.6051 -0.0335 -0.0252 -0.0143 -3.3451 -2.2841 -1.0693 -2.1713 -1.5624 -0.8624 -0.3259 -0.1941 -0.0251 -0.9801 -0.7255 -0.3859
14 1.7385 3.1788 6.1956 -0.0336 -0.0248 -0.014 -3.326 -2.2482 -0.9992 -2.0799 -1.5002 -0.7983 -0.346 -0.2045 -0.0218 -0.9848 -0.7418 -0.3786
15 1.2618 2.6918 5.8244 -0.0331 -0.0243 -0.0132 -3.2934 -2.208 -0.9344 -2.0549 -1.4509 -0.7375 -0.3577 -0.2156 -0.0179 -1.0015 -0.7452 -0.3709
16 0.7979 2.2934 5.4543 -0.0322 -0.0236 -0.0123 -3.2123 -2.1509 -0.867 -1.988 -1.4139 -0.6803 -0.3671 -0.2218 -0.0152 -1.0333 -0.7515 -0.3653
17 0.4721 1.9625 5.1399 -0.0308 -0.0222 -0.0115 -3.204 -2.0771 -0.7979 -1.9822 -1.3532 -0.6257 -0.3773 -0.2249 -0.0116 -1.0692 -0.7637 -0.3601
18 0.0278 1.561 4.801 -0.0301 -0.021 -0.0105 -3.1376 -2.0533 -0.7511 -1.9662 -1.3064 -0.5813 -0.3829 -0.2295 -0.0087 -1.0826 -0.7774 -0.3568
19 -0.3407 1.2306 4.4918 -0.0286 -0.0194 -0.0093 -3.1352 -2.0012 -0.7072 -1.9749 -1.2818 -0.5463 -0.3815 -0.2339 -0.0028 -1.1213 -0.788 -0.3474
20 -0.7177 0.9539 4.1556 -0.0274 -0.0183 -0.0082 -3.1209 -1.9355 -0.6536 -1.9472 -1.2372 -0.5127 -0.3903 -0.2356 0.0005 -1.1677 -0.8051 -0.3393

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Figure 6. Quarterly EPU and its Effects on U.K. Real GDP
Figure 6a: U.K. Economic Policy Uncertainty (EPU)

Quarterly, 2013 = 100

Period U.K. EPU
2013Q1 136.6753
2013Q2 92.95796
2013Q3 81.00876
2013Q4 89.35801
2014Q1 90.75723
2014Q2 65.54383
2014Q3 93.48055
2014Q4 76.81067
2015Q1 90.05906
2015Q2 109.0717
2015Q3 89.40004
2015Q4 79.19779
2016Q1 156.0749
2016Q2 249.2563
2016Q3 296.6783
2016Q4 274.1791
2017Q1 210.4081
2017Q2 227.1389
2017Q3 204.7098
2017Q4 213.5704
2018Q1 148.4915
2018Q2 152.2765
2018Q3 155.8095
2018Q4 205.5297
2019Q1 192.6352
2019Q2 165.8208

Note: The Brexit referendum (is) marked at mid-2016 with a dotted line

Source: Authors' calculations based on Baker, Bloom, and Davis (2016), accessed via www.policyuncertainty.com.

Figure 6b: Cumulative Effect of Uncertainty on Real GDP*

Percent

Period Cumulative effect of Uncertainty on Real GDP
2016Q1 0
2016Q2 -0.4132
2016Q3 -0.6909
2016Q4 -0.9581
2017Q1 -1.1545
2017Q2 -1.6786
2017Q3 -1.8049
2017Q4 -2.113
2018Q1 -1.9408
2018Q2 -2.1094
2018Q3 -2.0348
2018Q4 -2.217
2019Q1 -2.1048
2019Q2 -2.1058

*Uncertainty effects are estimated using a SVAR model of the U.K. economy with 7 variables: EPU, FSI, stock market index, term spreads, CPI, real GDP, and exchange rate.

Source: Authors' calculations based on data accessed via Haver Analytics and www.policyuncertainty.com.

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Figure 7. Change in Investment Growth by U.K. Firms and Brexit Uncertainty

Percentage points

  Change in Investment Growth by U.K. Firms and Brexit Uncertainty
High uncertainty -2.8
Low uncertainty -0.1

Note: The bars show the change in investment growth between 2011Q3:2016Q2 and 2016Q3:2019Q2. High uncertainty firms are the ones citing Brexit as one of the top three sources of uncertainty, low uncertainty firms are the ones citing Brexit uncertainty as "not important" or as "one of many sources" in the Decision Maker Panel Survey.

Source: Authors' calculations based on the Bank of England's November 2019 Monetary Policy Report.

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Figure 8. Changes in U.K. Investment and Employment Growths and EU Exposure through Exports
Figure 8a: Change in U.K. Investment Growth*

Percentage Point

Industry Total export exposure towards the EU (Percent) Change in investment growth* Weight (size of circles)
Agri. 12.652 2.911674 0.008217017
Eng. & Vehicles 27.9103 -3.320771 0.040515174
Real est. & buss. 6.32679 -2.98769 0.218868819
Chemicals 34.9329 -7.238091 0.017025296
Info. & Comm. 9.06909 -3.951376 0.054913364
Constr. 1.69321 7.27113 0.085918542
Distr. Serv. 10.6545 -8.098558 0.099955973
Education 2.13839 3.839323 0.033489033
Financial 14.4117 -2.141362 0.07405959
Food & Bev. 13.8049 -9.686337 0.025376902
Fuels & Oil 20.4381 19.51724 0.006104132
Health 0.106071 -1.036755 0.06649757
Hotels & Rest. 5.26777 8.577761 0.035447529
Metals 20.0672 1.150288 0.015821425
Mining 38.4966 -12.35667 0.0101718
Oth. Manuf. 15.9439 -4.297637 0.031201337
Oth. Serv. 0.86452 4.281633 0.081250021
Textile 42.8481 9.825024 0.003817983
Trans. & Storage 9.58844 -2.050234 0.048770247
Utilities 3.7719 -2.620618 0.042578246

*Change in quarterly growth rate in 2016Q3:2019Q2 relative to 2013Q3:2016Q2. Weighted by final demand. $$$ \Delta \text{INVG}_i = 1.05 - 0.27 \text{Exposure}_i + \varepsilon_i $$$

Source: Authors' calculations from industry-level Office for National Statistics data available at www.ons.gov.uk.

Figure 8b: Change in Employment Growth*

Panel B plots changes in employment growth rates since the referendum against export exposures towards the EU as of 2015 for 54 industries. Both measures are based on authors' calculations using publicly available data from the Office for National Statistics. The sizes of circles are proportional to final demand. The panel shows that there was no significant relationship between export exposures towards the EU and changes in employment growth rates since the referendum across industries.

*Change in quarterly growth rate in 2016Q3:2019Q2 relative to 2013Q3:2016Q2. Weighted by final demand. $$$ \Delta \text{EMPG}_i = -0.32\ 0.01\text{Exposure}_i + \varepsilon_i $$$

Source: Authors' calculations from industry-level Office for National Statistics data available at www.ons.gov.uk.

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Figure 9. Changes in U.K. Employment and Investment Growths and EU Exposure through Workforce
Figure 9a: Change in U.K. Employment Growth

Percentage Point

Industry Share of EU nationals in the workforce (Percent) Change in employment growth* Weight (size of circles)
Admin. Serv 9.578452 -0.082542 0.060184645
Agri. 6.740116 -0.4868885 0.008986461
Info. & Comm. 5.970082 0.5782265 0.056170468
Construction 7.825688 -0.4346263 0.08484664
Distr. Serv. 6.405727 -0.5488107 0.10345352
Education 4.005055 -0.1972352 0.043328235
Financial 5.609222 -0.8135109 0.079571883
Health 4.586501 0.0852307 0.065865588
Hotels 13.3702 -0.7383533 0.036969648
Mining 4.891494 0.6503239 0.059024445
Manufacturing 10.10571 -0.5102842 0.150211664
Oth. Serv. 5.259223 -0.3410433 0.033284622
Real Est. 3.448557 0.5990429 0.099981592
Tech. Serv. 6.006446 -0.2612389 0.066629272
Trans. & Storage 9.471502 -0.9207041 0.051491318

*Change in quarterly growth rate in 2016Q3:2019Q2 relatrive to 2013Q3:2016Q2. Weighted by final demand. $$$ \Delta \text{EMPG}_i = 0.58 - 0.12\text{Exposure}_i + \varepsilon_i $$$

Source: Authors' calculations from industry-level Office for National Statistics data available at www.ons.gov.uk.

Figure 9b: Change in Investment Growth

Percentage Point

Industry Share of EU nationals in the workforce (Percent) Change in investment growth* Weight (size of circles)
Agri. 6.740116 2.911674 0.008577998
Buss. Serv. 5.438275 -2.98769 0.216486933
Info. & Comm. 5.970082 -3.951376 0.053617342
Construction 7.825688 7.27113 0.080990091
Distr. Serv. 6.405727 -8.098558 0.098751229
Education 4.005055 3.839323 0.04135883
Financial 5.609222 -2.141362 0.075955089
Health 4.586501 -1.036755 0.062871788
Hotels & Rest. 13.3702 8.577761 0.03528926
Mining & Utilities 4.891494 -5.279921 0.056341597
Manufacturing 10.10571 -3.458227 0.143384067
Oth. Serv. 5.259223 4.281633 0.077224901
Trans. & Storage 9.471502 -2.050234 0.049150875

*Change in quarterly growth rate in 2016Q3:2019Q2 relatrive to 2013Q3:2016Q2. Weighted by final demand. $$$ \Delta \text{INVG}_i = -3.98 + 0.38\text{Exposure}_i + \varepsilon_i $$$

Source: Authors' calculations from industry-level Office for National Statistics data available at www.ons.gov.uk.

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Last Update: May 11, 2020