Interim Management Statement

THE BIOTECH GROWTH TRUST PLC Interim Management Statement - 3 months to 31 December 2007 (unaudited) The Biotech Growth Trust PLC seeks capital appreciation through investment in the worldwide biotechnology industry principally by investing in emerging biotechnology companies. The 3 month period ended 31 December 2007 was a volatile one for the biotechnology sector which saw the Company's net asset value per share fall by 2.7% compared to a rise of 0.6% in the Company's benchmark, the NASDAQ Biotechnology Index measured in sterling terms. The quarter started brightly with the net asset value per share rising by 2.6% in October due to a resurgence in acquisition activity in the sector but these gains were lost and more in November following the broader market sell-off amidst concerns about deteriorating credit quality, slowing global growth and further declines in the US housing market. The Company's poor performance continued into December where Biogen Idec, a significant holding in the Investment Portfolio, announced that following its decision to put itself up for sale, no significant offers had been received; Biogen Idec's share price fell by 25% as a result. On a positive note, however, the holdings in Savient and BioMarin performed well following the announcement of positive news concerning key new drugs. Given the difficult market conditions that prevailed during the quarter, exposure to larger biotechnology companies was increased and a number of the holdings in smaller companies were sold. The number of the holdings in the Investment Portfolio decreased to 34 at 31 December although this figure increased to 39 at the end of January 2008. The Company's share price fell by 2.9% during the three-month period as the discount of share price to net asset value per share widened slightly from 4.5% to 4.7%. During the period a total of 799,500 shares were repurchased for cancellation at a cost of £873,600 (including expenses). Since the period end, to the end of January 2008, the Company's net asset value per share fell by 2.4% compared to a fall in the benchmark index of 3.9%. The Company's share price fell by 4.8% in the same period. Trust Characteristics 31 December 2007 30 September 2007 Number of Holdings 34 45 Net Assets (£m) 72.6 75.6 Gearing (AIC basis) 100 100 Share Price (p) 108.50 111.75 NAV (p) 113.85 117.06 (Discount)/Premium (4.7%) (4.5%) Source: Frostrow Capital LLP 10 Largest Investments Name % of % of investment portfolio investment portfolio at 31 December 2007 at 30 September 2007 Amgen 9.2 7.2 Gilead Sciences 8.8 8.6 Biogen Idec 6.9 1.6 Genzyme 6.6 5.3 Genentech Inc 4.3 5.1 Imclone Systems 4.2 - Allos Therapeutics 3.8 2.1 BioMarin Pharmaceutical 3.4 3.8 Indevus Pharmaceuticals 3.2 3.0 OSI Pharmaceuticals 3.1 2.5 Total 53.5 39.2 Source: Frostrow Capital LLP Geographical Analysis % of % of investment portfolio investment portfolio at 31 December 2007 at 30 September 2007 North America 84.5 88.1 UK Listed 9.4 1.1 Unquoted 2.5 1.6 Continental Europe 2.3 7.5 Israel 1.3 1.7 Total 100.0 100.0 Source: Frostrow Capital LLP Performance 3 Months 1 Year 3 Years 5 Years Share Price -2.9% -3.6% +28.4% +87.1% NAV per share -2.7% -0.6% +12.4% +48.5% Benchmark* +0.6% +2.8% +4.8% +35.9% Source: Bloomberg & Fundamental data * Benchmark - NASDAQ Biotechnology Index measured in sterling terms. Past performance is not a guide to future performance. This interim management statement is available on the Company's website www.biotechgt.com The Company's Net Asset Value per share is announced daily and is available, together with the share price, on the TrustNet website at www.trustnet.com For further information contact: Mark Pope on 0203 008 4913 Frostrow Capital LLP Company Secretary 14 February 2008
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