<Page>
Exhibit 12.1
Enodis plc
Computation of Ratio of Earnings to Fixed Charges
Calculated under UK GAAP
(Amounts in millions, except ratios)
<Table>
<Caption>
Fiscal Year Ended 39 weeks ended
-------------------------------------------------------- ---------------------
Sept. 27, Sept. 26, Oct. 2, Sept. 30, Sept. 29, June 29, June 30,
1997 1998 1999 2000 2001 2002 2001
---------- --------- --------- --------- ----------- ---------- ---------
Earnings
- ----------------
Profit/(loss) on ordinary activities before
taxation from continuing operations L 48.7 L 33.0 L 42.7 L 56.7 L (118.1) L (98.1) L (17.6)
Interest expense 13.2 13.1 14.5 38.5 44.4 33.6 36.8
---------- --------- --------- --------- ----------- ---------- ---------
Total Earnings available for fixed charges L 61.9 L 46.1 L 57.2 L 95.2 L (73.7) L (64.5) L 19.2
========== ========= ========= ========= =========== ========== =========
Fixed charges
- ----------------
Interest expense L 13.2 L 13.1 L 14.5 L 38.5 L 44.4 L 33.6 L 36.8
---------- --------- --------- --------- ----------- ---------- ----------
Total fixed charges L 13.2 L 13.1 L 14.5 L 38.5 L 44.4 L 33.6 L 36.8
========== ========= ========= ========= =========== ========== ==========
Ratio of earnings to fixed charges 4.7 3.5 3.9 2.5 - (a) - (a) - (a)
========== ========= ========= ========= =========== ========== ==========
</Table>
<Page>
Enodis plc
Computation of Ratio Earnings to Fixed Charges
Calculated under US GAAP
(Amounts in millions, except ratios)
<Table>
<Caption>
Fiscal Year Ended 39 weeks ended
-------------------------------------------------------- --------------------
Sept. 27, Sept. 26, Oct. 2, Sept. 30, Sept. 29, June 29, June 30,
1997 1998 1999 2000 2001 2002 2001
---------- --------- --------- --------- ----------- ---------- --------
Earnings
- ---------------
Profit/(loss) on ordinary activities before
taxation from continuing operations L 39.1 L 22.5 L 32.3 L 43.2 L (118.8) L (94.9) L (27.0)
Interest expense 13.2 13.1 14.5 38.5 44.4 33.6 36.8
---------- --------- --------- --------- ----------- ---------- ---------
Total Earnings available for fixed charges L 52.3 L 35.6 L 46.8 L 81.7 L (74.4) L (61.3) L 9.8
========== ========= ========= ========= =========== ========== =========
Fixed charges
- ----------------
Interest expense L 13.2 L 13.1 L 14.5 L 38.5 L 44.4 L 33.6 L 36.8
---------- --------- --------- --------- ----------- ---------- ---------
Total fixed charges L 13.2 L 13.1 L 14.5 L 38.5 L 44.4 L 33.6 L 36.8
========== ========= ========= ========= =========== ========== =========
Ratio of earnings to fixed charges 4.0 2.7 3.2 2.1 - (b) - (b) - (b)
========== ========= ========= ========= =========== ========== =========
</Table>
(a) Under UK GAAP, in fiscal 2001, the 39 weeks ended June 30, 2001, and the
39 weeks ended June 29, 2002, earnings were insufficient to cover fixed
charges by L118.1 million, L17.6 million and L98.1 million, respectively.
(b) Under U.S. GAAP, in fiscal 2001, the 39 weeks ended June 30, 2001, and the
39 weeks ended June 29, 2002, earnings were insufficient to cover fixed
charges by L118.8 million, L27.0 million and L94.9 million, respectively.
For purposes of calculating these ratios: (i) "fixed charges" represent
interest cost; and (ii) "earnings" represent the aggregate Profit/(loss) on
ordinary activities before taxation from continuing operations and fixed
charges.